ABO Review Session Volume 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Vertex Distance Compensation for spectacles is most needed for Rx which begins at _________ | + /- 7.00 D
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| Each Lens Curve has a Diopter Value. The Diopter Value off a Curve depends on ________ | It's Radius
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| Slab-off is used when there's a vertical imbalance of at least _____________________ | 1.50 D
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| Active people shoud wear what type of temple Style? | Comfort Cable / Riding Bow
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| The Prism Base of a plus lens is __________ | At the Optical Center
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| Images formed on the retina are transmitted to the brain by the _____________ | Optic Nerve
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| A plano lens has a +6.00D Base Curve, How much is the Ocular Curve? | -6.00D
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| What is a Quadrofocal Lens? | A trifocal with an inverted FT bifocal
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| The agency responsible for developing standards for product tolerance is | ANSI ( American National Standards Institute)
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| A Smart Seg Bifocal is ___________ | a Flat Top Bifocal with a Progressive Segment
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| The Cavities inside of the eye are _________ | 1)Anterior Cavity 2)Posterior Cavity
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| The Image Jump Formula is ________________ | IJ^=Add power x Reading Level / 10
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| For Each 2 degrees of Pantoscopic Tilt, Lower the OC of the lens by ________________ | 1 mm
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| The ingredient used in photochromic lenses, that causes the lens to Darken when exposed to UV is____________________________ | Silver Halide
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| The 2 types of Prism in Glasses are? | 1)unwanted or Induced ^
2)Prescribed ^
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| to lengthen a short or wide face ________ | recommend a high temple
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| Exotropia can be corrected with ___________ | Base in Prism.
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| The standard Progressive has how many measurable optical centers? | two
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| An operation done to remove the corneal scars | Keratoplasty
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| the prism measurement indicator found in the lensometer is | the Reticle
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| the middle layer of the eyeball consist of | Choroid, Ciliary Body, Iris
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| The Outer Layer of the Eyeball consist of | Sclera, cornea, Limbus
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| the transition zone between the cornea and the sclera is ______________________ | The Limbus
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| The 2 Muscles of the Iris are? | Sphincter , Dilator
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| What is at the Center of the Macula? | Fovea Centralis
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| The Physiological Blind Spot is at __________ | the Optic Disc
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| what is Responsible for Central Vision and Visual Acuity | the Macula
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| When the Right temple is angled down, this adjustment will _________________________ | Raise the right side of the frame up
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| a Meniscus lens can have what type surfaces? | Convex, Concave, Plano
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| The ability to maintain single binocular vision with both eyes is called? | Fusion
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| part of the eye resposnible for 80% of light reflection is? | the Cornea.
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| You can not use Alcohol to clean this Frame material. | Polycarbonate
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| A frame type that has only one point of attachment | Numont
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| if you see a high plus rx that has been changed to a regular Rx with an add of +3.00 the patient has a condition called__________ | Pseudophakia
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| in Billateral Compound Hypropic Astigmatism the Images are formed _________________ | both images behind the Retina in both eyes
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| the 2 types of Strabismus are_______________ | 1)Phoria, 2)Tropia
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| name the Extrinsic Muscles_______________ | 2 Oblique and 4 Recti Muscles
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| what is the Patient tolerance for Prism Imbalance in the Horizontal meridian? | 2/3 prism Diopters
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| Rx -2.00+3.00x45 what is the Deficiency? | MA , Mixed Astigmatism
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| Vertex Distance Compensation for Contact lenses is most needed for rx's which begin begin at _______________________- | +/- 4.00 D
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| How do we determine the ideal Base Curve of a Plus Lens? | 1) Determine the True Powers
2)add +4.00D to the highest True Power to get the BC
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| This person uses accomodation to see Distance clearly | A Hyperope
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| How much do the eyes Converge when Reading? | 3 to 4 mm's
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| Kalichrome Lenses are Recommended for who? | Sharp Shooters
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| what color tint is recommended for night Driving? | Clear ( no color )
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| Decentering a minus lens downward will cause prism with Base direction? | Base Up Prism.
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| Directing the viuual axis of the eyes to a near point is _______________________ | Convergance
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| How many Diopters is 125 CM Focal Length.... | 8.00D
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| A longer than Normal Eye size causes..... | Myopia
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| +3.00+1.00x45 4^BU +2.50+1.50x135 3^BO Split the Prism in the Rx | OD 2 BU , 1 1/2 BO OS 2BD , 1 1/2 BO
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| WHAT DOES THE REFRACTING STRUCTURE OF THE EYE CONSIST OF..... | THE CORNEA, THE CRYSTLLINE LENS, THE AQUEOUS HUMOR, VITREOUS BODY.....
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| WHAT IS THE GEOMETRIC CENTER DISTANCE OF A FRAME THAT'S MARKED 52/17 | 69 mm (GCD = FPD)
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| THE AMOUNT OF LIGHT ENTERING THE EYE IS CONTROLLED BY THE........... | IRIS
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| A PERSON THAT HAS THE ENTIRE CRYSTALLINE LENS REMOVED IS .............. | APHAKIC
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| FOR EVERY 2 DEGREES OF PANTOSCOPIC TILT THE OPTICAL CENTER SHOULD BE.......(LOWERED OR RAISED BY ....) | LOWERED BY 1mm
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| WHICH LENS MATERIALS BLOCK ULTRA-VIOLET RAYS AUTOMATICALLY....... | 1)POLYCARBONATE 2)HIGH INDEX 3)TRIVEX
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| WHAT WOULD YOU RECOMMEND TO A GOLF PLAYER.... | RD22 SEGMENT IN THE UPPER TEMPORAL CORNER
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| WHAT STYLE BRIDGE DO WE USE TO LENGTHEN A SHORT NOSE....... | KEY-HOLE BRIDGE
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| A #3 TINT ABSORBS HOW MANY PERCENT OF LIGHT ENTERING THE LENS....... | 80%
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| AN OBJECT VIEWED THROUGH A PRISM APPREARS | TOWARDS THE APEX
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| THIS METAL MATERIAL HOLDS SHAPE THE BEST OF ALL METAL FRAMES....... | NIKEL SILVER
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| WHICH FRAME MATERIAL IS HYPOALLERGENIC..... | NYLON
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| THE TRANSITION ZONE BETWEEN THE CORNEA AND THE SCLERA IS....... | THE LIMBUS
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| ABNORMAL SENSITIVITY TO LIGHT...... | PHOTOPHOBIA
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| SEEING ONE OBJECT AS TWO (DOUBLE VISION)... | DIPLOPIA
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| THE AGENCY RESPONSIBLE FOR PRESCRIPTION RELEASE LAWS WITH NO DISCLAIMER IS..... | FTC (FEDERAL TRADE COMMISSION)
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| TO CORRECT ESOPHORIA PATIENTS NEED | BO PRISM
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| A CONDITION WHERE THE EYE TURNS OUT OCCASIONALLY IS CALLED........ | EXOPHORIA
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| PLANO-2.00 X90 HOW MUCH POWER DOES THIS LENS HAVE AT 90.. | NO POWER
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| WHAT IS THE PRISM TOLERANCE IN THE VERTICAL MERIDIAN BASED ON ANSI STANDARDS | 1/3 OF PRISM DIOPTER
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| THIS LENS HAS ONE MERIDIAN THAT HAS NO EFFECT ON LIGHT. THE REAL POWER OF THE LENS IS LOCATED 90 DEGREES AWAY....... | A CYLINDER LENS
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| AN UNCOATED GLASS LENS, TINTED GRY #3 WITH AN RX OF -5.00D WILL HAVE A TINT THAT'S..... | DARKER AROUND THE EDGES THAN CENTER...
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| +4.00-2.00X180 IF PD IS 5mm TOO NARROW, HOW MUCH IS THE INDUCED PRISM AND WHAT BASE DIRECTION.... | 2^ DIOPTERS BASE IN
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| rx is -12.00D RVD = 11mm , FVD = 16mm WHAT rx WOULD YOU ORDER FOR PATIENT? | -12.50 D
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| THE CYLINDER AXIS TOLERANCE FOR A -1.00D CYLINDER BASED ON ANSI STANDARDS IS...... | 3 DEGREES OFF AXIS
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| WHICH LENS CUTS OFF WAVELENGHTS OF LESS THAN 500NM | BLUEBLOCKERS
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| THE FRONT SURFACE OF THIS LENS HAS A CURVE THAT GRADUALLY FLATTENS OR STEEPENS AS IT MOVES AWAY FROM THE OPTICAL CENTER..... | ASPHERIC LENSES
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| WHEN DECENTERING FOR BIFOCAL LENSES, WE USE WHICH PD........ | NEAR PD
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| THE AVERAGE PUPIL SIZE UNDER NORMAL LIGHTING IS..... | 3 TO 5 mm
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| THE PRENTICES RULE FORMULA STATES...... | ^ = DIOPTER X DECENTRATION /10
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| THIS LENS HAS ONE POWER IN ALL MEIDIANS.... | SPHERE LENS
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| THE CYLINDER AXIS TOLERANCE FOR A 2.00D CYLINDER LENS BASED ON ANSI STANDARDS... | 2 DEGREES
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| TOLERANCE FOR SEG HEIGHT LOCATION BASED ON ANSI STANDARDS IS..... | WITHIN 1 mm OF SPECIFICATION
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| THIS TOOL IS USED TO MEASURE LENS THICKNESS.. | LENS CALIPER
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| LIGHT RAYS ORIGINATING FROM A DISTANT OBJECT WILL BE DESCRIBED AS ....... | PARALLEL LIGHT
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| HIGHER THE SPECIFIC GRAVITY (SG)OF A MATERIAL, HEAVIER OR LIGHTER...... | HEAVIER THE LENS
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| CR-39 LENSES ARE THINNER THAN GLASS LENSES.. TRUE - FALSE | FALSE
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| THE CYLINDER AXIS TOLERANCE FOR A 0.25D CYLINDER LENS BASED ON ANSI STANDARDS.... | 7 DEGREES
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| THE FINAL STEP IN FITTING A FRAME TO A PATIENT IS....... | ADJUST THE TEMPLES
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| TO MOVE THE FRAMES CLOSER TO THE FACE WE...... | SPREAD THE NOSE PADS.. WIDEN THE BRIDGE...
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| TO MOVE THE RIGHT LENS HIGHER ON THE FACE WE ADJUST BY | BY BRINGING THE RIGHT TEMPLE UP...
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| MADE OF IRON AND CHROME COMBINES FLEXIBLITY WITH STRENGTH AND DURABILITY... THIS FRAM MATERIAL IS..... | STAINLESS STEEL..
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| THE OLDEST MATERIAL USED FOR GLASSES | GLASS LENSES
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| THE AGENCY RESPONSIBLE FOR PUBLIC HEALTH PRODUCTION, AND SALE OF FOOD AND DRUGS IS... | FDA FOOD AND DRUG ASSOCIATION
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| THE AGENCY THAT'S RESPONSIBLE FOR WORKPLACE SAFETY AND HAZARD CONTROL IS..... | OSHA OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION
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| THE DISTANCE BETWEEN THE GEOMETRIC CENTER OF THE FRAME TO THE WEARERS PD IS.... | INSET OR OUTSET (FPD-PPD / 2)
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| WHEN SELECTING FRAMES FOR THE ELDERLY THE MOST IMPORTANT FACTOR TO CONSIDER... | WEIGHT OF THE GLASSES OR FRAMES
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| THE FUNCTION OF THE CILIARY MUSCLES.... | TO CHANGE THE SHAPE OF THE CRYSTALINE LENS..
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| PATIENT LOOKING THROUGH 2BU OD, 2BD OS HOW MUCH IS THE IMBALANCE..... | 4 DIOPTERS.
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| THESE LENSES HAVE A CENTRAL AREA WITH THE PRESCIBED LENS POWER AND A PERIPHERAL AREA OF LITTLE OR NO POWER.. | LENTICULAR LENSES .... USED FOR VERY HIGH PLUS PRESCRIPTIONS
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| HOW LONG SHOULD WE KEEP THE PATIENTS RECORDS IN THE OFFICE.... | 3 YEARS..
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| WHAT IS BICENTRIC GRINDING... | SLAB-OFF
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| IF A PATIENT DOES NOT HAVE PRISM IN HIS RX, THE OPTIC CENTERS OF HIS GLASSES SHOULD BE.. | INFRONT OF THE PUPILS
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| ISOMETROPIC PRESCRIPTION IS | AN RX HAVING THE SAME POWER AND SIGN FOR EACH EYE...
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| RX: OD -8.00-2.00 X 80 OS BALANCE WHAT LENS WOULD YOU ORDER FOR THE LEFT EYE, WHAT MATERIAL WOULD YOU ORDER FOR PATIENT. | LEFT EYE RX WOULD BE THE SAME AS RIGHT EYE. BECAUSE OF SAFETY USE ONLY POLYCARBONATE LENS.
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| THE STEPS OF FINISHING A LENS IN CORRECT ORDER ARE: | 1- CALCULATIONS 2- SPOTTING 3- CENTERATION 4-BLOCKING 5- EDGING
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| THE DISTANCE THAT THE REFRACTIONIST USED WHEN PERFORMING YOUR EYE EXAM IS CALLED... | RVD REFRACTED VERTEX DISTANCE
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| BIFOCALS AND TRIFOCALS ARE CONSTRUCTED IN 3 WAYS, THEY ARE.... | 1- FUSED (GLASS) 2-ONE PIECE 3-CEMENTED
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| THE FRAME DIFFERENCE IS.... | THE DIFFERENCE BETWEEN A AND B MEASUREMENT OF A FRAME.. IN ROUND FRAMES THE FRAME DIFFERENCE IS ZERO (0)
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| A ROUND FRAME IS MARKED 52/18 WHAT IS THE EFFECTIVE DIAMETER OF THIS FRAME.. | ED= 52
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| PATIENT LOOKING THROUGH 1BI^ OD, 1BO^ OS HOW MUCH IS THE ^ IMBALANCE... | NO ^ IMBALANCE BI AND BO ARE CANCELLING ^
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| RX: +2.75-1.25X135 THE REFRACTIVE ANOMALY INDICATED BY THIS RX IS... | CHA COMPOUND HYPEROPIC ASTIGMATISM
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| THE MAIN REASON FOR USING LENTICULAR LENSES FOR HIGH POWERS IS THAT THEY ARE LESS EXPENSIVE (TRUE OR FALSE) | TRUE
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| A PATIENT IS WEARING GLASSES WITH 2 PRISM DIOPTERS BASE UP EACH EYE. HOW MUCH PRISM IS THE PATIENT LOOKING THROUGH... | NO PRISM. ZERO IMBALANCE..
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| WHT IS THE POWER OF THE CYLINDER AT 180 AXIS +1.50+2.00X180 | +0.00D
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| A PATIENT IS PSEUDOPHAKIC IN THE OD AND HAS CATARACTS IN THE OS AND IS WAITING FOR SURGERY. OD+1.00-0.50X85 OS-2.00-1.00X90 WOULD YOU ORDER SLAB OFF? | NO, GIVE BALANCE LENS FOR OS AND WAIT FOR SURGERY.
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| A PATIENTS PD IS 68/64. WHAT'S THE SEG INSET? | 68-64/2 = 4/2=2 INSET FORMULA IS PDPD-PNPD/2
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| THE MECHANICAL PD IS...... | THE DISTANCE BETWEEN THE OPTIC CENTERS OF THE LENSES IN A FINISHED PAIR OF GLASSES
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| THE CENTER OF THE METAL BLOCK IS CALLED.... | THE MECHANICAL CENTER.
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| THE AVERAGE PPD FOR ADULTS IS..... | 50-75 mm
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| REFRACTIVE INDEX FORMULA | SPEED OF LIGHT IN AIR / SPEED OF LIGHT IN MATERIAL
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| WHAT IS ABBE VALUE STAND FOR? | THE MEASURMENT OF CHROMATIC ABBERATIONS DISTORTIONS
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| THE GEOMETRIC CENTER IS..... | THE POINT WHERE A AND B INTERSECT.
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| WHAT IS THE CHEMICAL USED IN AR COATING TO REDUCE GLARE ON LENSES | MAGNESIUM FLUORIDE
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| WHAT ARE CRT LENSES | CATHODE RAY TUBE USED FOR COMPUTER PROGRAMMERS CONSIST OF UV, TINT, AND AT COATING
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| THE BEST IMPACT RESISTANT -10.00 D LENS IS | POLYCARBONATE
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| (TRUE OR FALSE) THE CONES FUNCTION AT NIGHT | FALSE
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| FOR HIGH MINUS RX USE A SMALL OR LARGE SIZE FRAME? | SMALLER FRAMES WILL PRODUCE THINNER LENSES
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| IF THE FRAME SITS TOO HIGH ON THE FACE... | STRETCH THE BRIDGE OR SPREAD THE NOSE PADS
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| TO INDUCE BI PRISM IN A PLUS LENS, YOU'LL MOVE THE LENS WHAT DIRECTION... | IN
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| THIS FRAME MATERIAL MAY SHRINK AS HEAT IS APPLIED... | POLLYAMIDE
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| this frame material can be safely heated up to 200 degrees C. | Optyl
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| INNER LAYER OF THE EYEBALL CONSISTS OF.... | 1-MACULA 2-FOVEA CENTRALIS 3-OPTIC DISC
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| THE MAIN FUNCTION OF THE SCLERA IS | TO PROTECT THE EYEBALL.
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| TO INDUCE BASE UP PRISM IN A MINUS LENS, YOU'LL MOVE THE LENS WHAT DIRECTION.... | DOWN
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| THIS PLASTIC MATERIAL FRAME CAN BE BENT WITH OR WITHOUT HEAT APPLIED.. | ZYL
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| THE BEST FRAME BRIDGE FOR A PERSON WITH LONG NOSE IS.... | SADDLE BRIDGE
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| THE BREAKING UP OF WHITE LIGHT ONTO IT'S COMPONET COLORS BY PRISM IS CALLED..... | DISPERSION
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| THIS MATERIAL FRAME WILL BEND WHEN HEATED AND WILL RETURN TO IT'S ORIGINAL SHAPE.... | OPTYL
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| A PROGRESSIVE WEARER COMPLAINS OF NARROW READING AREA, WHAT WOULD YOU DO.... | DECREASE THE VERTEX DISTANCE
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| THE DISTANCE THAT THE OPTICIAN MEASURES WITH THE DISTOMETER IS CALLED... | FVD.... FITTED VERTEX DISTANCE
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| A LENS WITH THE FOCAL LENGTH OF 2 METERS IS HOW MANY DIOPTERS.... | 0.50D
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| THIS MATERIAL IS VERY SOFT AND REQUIRES SCRATCH RESISTANCE COATING... | POLYCARBONATE
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| +1.00+2.50X90 WHAT IS THE SPHERICAL EQUIVELANT | +2.25
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| TO SHORTEN A LONG NOSE | CHOSE A LOW BRIDGE .. SADDLE BRIDGE..
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| LIGHT RAYS PASSING THROUGH A PRISM ARE... | DEVIATED TOWARDS THE BASE
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| THE MOST COMMON CAUSE FOR FRAMES BEING MISALLIGNED IS.... | X-ING BRIDGE BEING BENT
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| THE CELLS OF THE RETINA... | CONES AND RODS
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| WHAT DOES PRISM DO TO LIGHT... | DEVIATE, DISPLACE, DISPERSE
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| IF THE OC OF THE RIGHT LENS IS AT QUADRANT 3 IN THE LENSOMETER, WHAT IS THE PRISM.. | BD AND BO PRISMS
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| AN UNBREAKABLE PLASTIC FRAME THAT'S ALSO HYPOALLERGENIC IS.... | NYLON
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| AS THE FOCAL LENGTH OF A LENS INCREASES THE DIOPTER POWER WILL..... | DECREASE
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| IF THE NOSE PADS ARE BOTH CAUSING AN INDENTATION ON THE NOSE WHAT'S THE CAUSE.. | THIS MEANS THAT THE NOSE PADS ARE TOO SMALL FOR THE FRAME WEIGHT
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| IF THE BIFOCAL SEG'S ARE TOO LOW HOW DO WE FIX IT.. | NARROW THE BRIDGE, DECREASE THE PANTOSCOPIC TILT..
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| WAVELENGTHS SHORTER THAN 380nm ARE,.,. | UV... ULTRA VIOLET
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| THE DISTANCE FROM THE OCULAR SURFACE OF THE LENS TO THE APEX OF THE CORNEA IS... | VERTEX DISTANCE
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| THE STANDARD REFRACTIVE INDEX FOR THE CALIBERATION IS... | 1.530
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| THE SMALLER THE RADIUS, THE .......... THE FOCAL LENGTH | SHORTER
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| THIS FACIAL SHAPE CAN WEAR ANY STYLE AND SHAPE FRAME..... | OVAL
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| IF THE FPD IS MORE THAN THE PPD DO WE APPLLY POSITIVE FACE FORM OR NEGATIVE FACE FORM... | POSITIVE FACE FORM
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| THIS FRAME MAY BE HEATED UNTIL IT BENDS UNDER IT'S OWN WEIGHT... | OPTYL
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| THE AREA OF THE RETINA RESPONSIBLE FOR SHARPEST IMAGE IS.... | MACULA
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| AS REFRACTIVEE INDEX INCREASES, THE THICKNESS OF THE LENS WILL.... | DECREASE
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| THESE GLASSES NEED TO BE SOAKED IN WATER MONTHLY TO AVOID DRYING OUT AND BREAKING... | NYLON
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| THE CONNECTION OF ONLY 3 POINTS, WHICH PRESSURE MAY BE APPLIED TO THE FACE.. | THE FITTING TRIANGLE
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| THE ORTHOSCOPIC TILT IS WHEN... | THE EYEWIRE HAS NO ANGLE AND IT IS STRAIGHT WITH NO CURVE..
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| AN AREA OF RETINAL VISION LOSS .... | SCOTOMA
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| THE PRINCIPLE CONSUMER PROTECTION AGENCY OF THE FEDERAL GOVERNMENT IS THE..... | FDA FOOD AND DRUG ADMINISTRATION
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| THE CYLINDER AXIS TOLERANCE FOR 0.75D CYLINDER IS.... | 5 DEGREES
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| WHEN THE EYEWIRE HAS NO TILT OR ANGLE AND IS STRAIGHT | ORTHOSCOPIC TILT
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| LIGHT IS PART OF THE ELECTROMAGNETIC SPECTRUM RANGING BETWEEN ........... nm | 380 AND 760
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| THE DROPBALL TEST IS..... | A 5/8" STEEL BALL DROPPED FROM A HEIGHT OF 50" TO TEST GLASS LENSES SAFETY..
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| NORMAL PANTOSCOPIC TILT IS ABOUT...... | 80TO 10 DEGREES
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| THE RIGHT EAR OF A PATIENT IS LOWER THAN THE LEFT EAR. WHAT SHOULD THE OPTICIAN DO: | BRING THE LEFT TEMPLE UP..
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| HOW DO WE VERIFY SLAB OFF IN GLASSES? | USING THE LENS CLOCK
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| WHICH CELLS OF THE RETINA ARE RESPONSIBLE FOR PERIPHERAL VISION... | RODS
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| THE AVERAGE CONVERGENCE FOR EYES WHEN READING IS.... | 4mm
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| WHEN A BASE CURVE OF A LENS IS FLATTER THAN THE OCULAR CURVE, WHAT LENS DESIGN IS THIS.. | MINUS MENISCUS
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| WHAT IS PTOSIS...... | DROOPY EYELIDS
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| WHAT ARE ADVANTAGES OF AR COATING... | INCREASED TRANSMISSION REDUCED GLARE DUE TO REDUCED REFLECTION
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| TO INCREASE REFLECTION , WE USE... | MIRROR COATING
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| WHAT WOULD YOU RECOMEND TO AN APHAKIC PATIENT... | UV PROTECTION
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| THIS FRAME TYPE SHOULD BE SOAKED OVERNIGHT PERIODICALLY | NYLON
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| TO REDUCE REFLECTION & INCREASE TRANSMISSION .. WE USE.. | AR ANTI REFLECTION COATING
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| A MINUS BASE CURVE LENS... | MYODISC
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| 2 WAYS OF HARDENING GLASS LENSES ARE... | HEAT TREATING CHEMICAL TREATING
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| LIMBUS IS SURROUNDED BY THE | THE CORNEA
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| THE UNIT OF LENS POWER IS .. | DIOPTER
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| AN AMMETROPE IS | AN EYE THAT NEEDS REFRACTIVE CORRECTION OR GLASSES OR CONTACTS..
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| HOW DO WE CORRECT PTOSIS... | USING PTOSIS CRUTCH
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| WHICH ONE OF THE FOLLOWING FOCAL LENGTH'S HAS THE STRONGEST POWER? 20" , 40, 80" | 20"
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||||
| TO TAKE THE PPD, THE DISPENSER SHOULD BE POSITIONED HOW FAR FROM THE PATIENT.. | 40cm
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||||
| EXESSIVE INTEROCULAR PRESSURE LEADS TO | GLAUCOMA
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||||
| THE FOCAL LENGTH OF A 2.00D LENS IN INCHES IS | 20"
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|
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| TO SHORTEN A LONG FACE WHAT FRAME RECOMENDATIONS DO WE MAKE... | MID OR LOW TEMPLE LOW BRIDGE DEEPER FRAMES.
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| TO DETERMINE THE BASE CURVEE OF A MINUS LENS WHAT ARE THE PROCEDURES... | 1- DETERMINE THE TRUE POWERS 2- SELECT THE STRONGER TRUE POWER 3- IF PLUS ADD 4.00D TO THE STRONGER TP 4- IF MINUS BETWEEN PL TO -8.00 ADD +8.00 TO THE STRONGER TP BETWEEN -8.25 TO -15.00 USE PLANO BC OVER -15.00 USE MYODISC OR BICONCAVE
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| TO ELIMINATE A GAP BETWEEN THE LENS AND A METAL EYEWIRE WE USE.... | LENS LINERS
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| THIS MEASUREMENT IS TWICE THE LONGEST RADIUS OF THE FRAME | ED EFFECTIVE DIAMETER
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| LOWER THE ABBER # OF A MATERIAL THE HIGHER OR LOWER THE ABBERATION OR DISTORTION | GREATER THE CHROMATIC ABBERATION
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| THE SPHERE LINES FOCUS ON +1.00D, THE CYLINDER LINES FOCUS ON -1.25D WHAT IS THE POWER OF THE CYLINDER FOR THIS LENS.. | -2.25D
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|
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| THE HEIGHT FROM WHICH THE STEEL DROP BALL USED FOR THE DROP BALL TEST IS DROPPED IS... | 50"
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|
||||
| THE HIGHER THE REFRACTIVE INDEX THE MORE OF LESS THE UV ABSORPTION... | MORE
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|
||||
| WHAT ARE THE COMPONENT COLORS OF WHITE LIGHT | ROYGBIV
RED, ORANGE, YELLOW, GREEN, INDIGO, VIOLET
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|
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| STANDARD BIFOCAL LENSES HAVE AN INTERMEDIATE POWER THAT IS... | 50% OF THE NEAR ADD
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|
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| A TENDANCY OF THE EYE TO DEVIATE FROM IT'S NORMAL POSITION IS..... | A PHORIA
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|
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| A PLUS LENS MOVED DOWNWARD FROM IT'S PRIMARY POSITION WILL RESULT IN WHAT BASE PRISM... | BD ^ BASE DOWN
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|
||||
| WHAT ARE THE TRUE POWERS OF THIS RX: -6.50+3.50X65 | -6.50@65 / -3.00@155
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|
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| WHAT IS THE HORIZONTAL AND VERTICAL POEWRS OF THIS RX.... +10.00-8.00X90 | V= +10.00D
H= +2.00D
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|
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| ANOTHER NAME FOR A BI-CONCAVE LENS | MYODISC
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|
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| IF THE RIGHT TEMPLE OF A FRAME IS ANGLED OUT, THIS ADJUSTMENT WILL RESULT IN | THE RIGHT SIDE OF THE FRAME FRONT TO BE CLOSER TO THE RIGHT EYE
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|
||||
| THIS LENSES CHANGE SHADE DEPENDING ON THE AMOUNT OF UV RAYS STRIKING THEM | PHOTOCHROMIC (TRANSITIONS)
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|
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| ABSORPTION OF LIGHT IN A LENS CAN BE INCREASED BY.... | TINTING THE LENSES
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|
||||
| WHAT'S THE BEST TINT FOR SENSATIVITY TO LIGHT INDOORS | ROSE
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|
||||
| IF THE EYELASHES OF THE PATIENT RUB THE BACK SIDE OF THE LENSES THE FITTER SHOULD.... | INCREASE VERTEX DISTANCE
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|
||||
| THE MEASUREMENT OF THE DENSITY OR THE WEIGHT OF A MATERIAL IS CALLED | SPECIFIC GRAVITY... SG
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|
||||
| THIS LENS HAS WITH MOTION... | MINUS LENS
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|
||||
| IF THE FRAME DIMENSIONS ARE A=50 , ED=55 AND THE FRAME DIFFERENCE OF 8mm WHAT IS THE B MEASUREMENT | 42mm
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|
||||
| THE MUSCLES OF THE EYE RESPONSIBLE FOR CHANGING THE SHAPE OF THE CRYSTALLINE LENS ARE | CILLIARY MUSCLES
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|
||||
| WHAT IS THE SPHERICAL EQUIVELANT OF : -3.00+3.00X90 | -1.50DS
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|
||||
| WHAT IS THE HORIZONTAL AND VERTICAL POWERS OF: PLANO-6.00X90 | H= -6.00@180
V= PLANO@90
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|
||||
| TO CHANGE AN RX FROM PLUS FORM TO A MINUS FORM IS CALLED | TRANSPOSING
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|
||||
| LIGHT RAYS EMANATING FROM AN OBJECT WILL BE | DIVERGING
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|
||||
| THE STEEPER THE CURVE, THE ...... POWER. | STRONGER
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|
||||
| WHAT IS THE DISTANCE FROM THE GEOMETRIC CENTER TO THE TOP OF THE SEGMENT FRAME: A:55, B:46, DBL:22, SEG HT: 17 | 6mm
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|
||||
| THE DISTANCE BETWEEN THE CORNEA AND THE CENTER OF THE LENS ON OCULAR CURVE IS | VERTEX DISTANCE
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|
||||
| PT'S OLD RX IS -3.00DS, IT HAS A +6.00D BASE CURVE. NEW RX IS -5.00DS, WHAT BASE CURVE WOULD CREATE THE LEAST AMOUNT OF CHANGE ON THE OCULAR CURVE OR SURFACE. | +4.00
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|
||||
| WHAT IS THE "C" MEASUREMENT | IT'S THE WIDTH OF THE LENS ALONG THE CENTRAL DATUM LINE. (CIRCUMFERENCE)
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|
||||
| THE VERTICAL DIFFERENCE IN POWER BETWEEN THE LENSES IN THIS RX IS: OD+1.00-0.50X45 OS+1.00-0.50X90 | 0.25D
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|
||||
| THE FINE LINES ON THE LENSOMETER FOCUS AT +0.75D AND THE COARSE LINES FOCUS ON -1.50. THE AXIS WHEEL IS ON 20 DEGREES. WHAT'S THE RX | +0.75-2.25X20
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|
||||
| DISTANCE RX IS -15.00DS OR MECHANICAL PD IS 68mm PATIENT PD IS 64mm HOW MUCH PRISM IS PATIENT LOOKING THROUGH | 3.0 ^ BI EACH EYE
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|
||||
| A +9.00D LENS DECENTERED 5mm WILL INDUCE HOW MUCH PRISM | 4.5^
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|
||||
| +2.50-3.00X45 OU FPD=72, PD=66 LAB DECENTERED LENSES WRONG WAY, WHAT'S THE PRISM IMBALANCE | 1.2^ DIOPTERS
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|
||||
| -2.25-0.75X170 ADD+2.50 WHAT IS THE INTERMEDIATE RX | -1.00-0.75X170
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|
||||
| -3.00-2.50X180 ADD+2.50 WHAT IS THE READING RX | -0.50-2.50X180
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|
||||
| CORRECT THIS IMBALANCE BY SLAB-OFF (10MM READING LEVEL) OD+5.00-2.00X90 OS+3.37-3.00X90 | 1.63 BU IN OS
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|
||||
| +4.00-1.00X160 ADD +3.00 FT-28, SEG OC IS 5mm BELOW THE LINE HOW MUCH IS THE IMAGE JUMP ^ | 1.5^
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|
||||
| AN AVERAGE HUMAN EYE IS HOW LONG? | 1 AND 1/8 INCHES
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|
||||
| +8.00-4.00X90 WHAT IS THE POWER AT 180 | +4.00D
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|
||||
| THE CELLS OF THE RETINA THAT ARE LOCATED ON THE MACULA ARE | CONES
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|
||||
| (true OR false) THE OCULAR CURVE OF THE LENSES IS ALWAYS CONVEX | FALSE IT'S ALWAYS CONCAVE
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|
||||
| AMBLYOPIA IS OFTEN CORRECTED BY: | OCCLUDER LENSES
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|
||||
| SPEED OF LIGHT IN THE AIR IS: | 186,000 mps
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|
||||
| THE BEST LENS FOR REDUCING GLARE PROBLEM IS: | POLARIZED LENSES
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|
||||
| THE POINT OF NO REFRACTION IS A LENS IS: | THE OPTICAL CENTER
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|
||||
| THE FITTING TRIANGLE IS: | CONNECTING OF ONLY 3 POINTS WHICH PRESSURE CAN BE EXERTED
1) CREST OF THE NOSE
2&3) BOTH SIDES OF HEAD JUST ABOVE THE ROOTS OF THE EARS
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|
||||
| THE DISTANCE BETWEEN THE FOCAL POINT AND THE LENS IS CALLED THE..... | FOCAL LENGTH
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|
||||
| THIS LENS CREATES A REAL IMAGE... | PLUS LENSES
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|
||||
| BLUE BLOCKER LENSES ARE... | REDISH ORANGE LENSES USED FOR CATARACT PATIENTS, BLUE BLOCKERS CUT OFF THE BLUE AND SHORTER WAVELENGTHS (LESS THAN 510nm)
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|
||||
| (TRUE OR FALSE) PHOTOCHROMIC LENSES GET DARKER ON HOT DAYS THAN ON COLD DAYS.... | FALSE (THE OPPOSIT)
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|
||||
| THE PHYSIOLOGICAL BLIND SPOT IS | WHEN THE IMAGE IS FORMED ON THE OPTIC DISC
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|
||||
| EMMETROPE IS: | A NORMAL EYE.. NO CORRECTION NEEDED
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|
||||
| A SERIES OF PRISMS STACKED ONE ON TOP OF THE OTHER CAN BE CUT TO APPLY TO ANY SHAPE, WITH SCISSORS... | FRESNEL PRISMS...
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|
||||
| A PLUS LENS MOVING AWAY FROM THE EYE WILL CHANGE IN POWER, HOW... | IT WILL GAIN POWER, BECOME MORE PLUS
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|
||||
| THE MRP OF A PROGRESSIVE LENS IS WHERE.. | 2 TO 4 mm BELOW THE FITTING CROSS
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|
||||
| IN ROUND RD22 BIFOCAL SEGMENT, THE OC IS WHERE | IN THE CENTER OF THE SEG AT 11 mm
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|
||||
| THE POWER OF A LENS DEPENDS ON WHAT FACTORS | THE CURVES
THE REFRACTIVE INDEX
THE THICKNESS OF THE LENS
THE VERTEX DISTANCE
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|
||||
| THE FOCAL LENGTH OF A 4.00D LENS IN CM IS | 25CM
🗑
|
||||
| -4.00+4.00X175 OU THE DEFICIENCY OF THIS RX IS | BILLATERAL SIMPLE MYOPIC ASTIGMATISM SMA
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|
||||
| WHAT WOULD YOU RECOMMEND FOR FISHING | POLARIZED LENSES
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|
||||
| THE BEST TINT FOR SHOOTING GLASSES IS | KALICHROME (YELLOW TINT)
🗑
|
||||
| WHAT INSTRUMENT MEASURES THE CURVES OF A LENS | A LENS CLOCK
🗑
|
||||
| MINIMUM THICKNESS OF SAFETY PRESCRIPTION LENSES | 3.0mm CENTER
🗑
|
||||
| THE FIRST PLASTIC MATERIAL USED FOR GLASSES WAS | CR39 (COLUMBIAN RESIN BADGE 39)
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|
||||
| THE LENS CLOCK IS ALSO USED TO CHECK WHAT.. | SLAB OFF ON THE LENSES
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|
||||
| RECOMENDED FOR NIGHT TIME DRIVING... | ANTI REFLECTION COATING .. AR
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|
||||
| ANTIMETROPIA IS: | AN RX WITH THE OD & OS HAVING OPPOSITE SIGNS..
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|
||||
| WHAT WOULD YOU RECOMMEND TO A PILOT WHO FLIES IN CLOUDY AREAS | YELLOW TINT (TO INCREASE CONTRAST)
🗑
|
||||
| THE FORMULA FOR CALCULATING REFRACTING INDEX | SPEED OF LIGHT IN THE AIR / SPEED OF LIGHT IN MATERIAL
🗑
|
||||
| REVERSE SLAB OFF IS: | BASE DOWN PRISM IN A BIFOCAL LENS
🗑
|
||||
| THE IDEAL BASE CURVE IN A LENS IS: | +6.00D
🗑
|
||||
| A SLAB-OFF IS USED FOR THE CORRECTION OF | EXCESSIVE PRISM IMBALANCE IN THE READING LEVEL OF A BIFOCAL LENS
🗑
|
||||
| A REVERSE SLAB OFF SHOULD BE USED IN THE EYE WHICH HAS THE: | MOST PLUS OR LEAST MINUS
🗑
|
||||
| USED TO CHECK THE GLASS LENSES FOR HEAT TREATING: | COLMASCOPE OR POLARISCOPE
🗑
|
||||
| WHICH LENS DESIGN WOULD YOU USE FOR A HIGH PLUS RX: | AN ASPHERIC DESIGN
🗑
|
||||
| (TRUE OR FALSE) WHEN CHANGING OR INCREASING THE INDEX OF REFRACTION OF A LENS, YOU CHANGE THE SPEED OF LIGHT TRAVELLING THROUGH THE LENS. | TRUE.. THE SPEED OF LIGHT WILL CHANGE
🗑
|
||||
| A CONCAVE, CONVEX LENS IS CALLED A | MENISCUS LENS
🗑
|
||||
| THE PANTOSCOPIC TILT CAN BE INCREAED UP TO HOW MUCH.... | 18 DEGREES
🗑
|
||||
| WHICH OF THE FOLLOWING INDICATES THE BEST VISUAL ACUITY 20/15 , 20/20, 20/30 | 20/15
🗑
|
||||
| ANISOMETROPIA IS: | WHEN THE RX IN OD & OS IS 1.50D OR MORE DIFFERENT FROM EACH OTHER
🗑
|
||||
| A COMPOUND HYPEROPIC PATIENT NEEDS A ...TO CORRECT IT.. | PLUS TORIC LENS
🗑
|
||||
| IN COMPOUND MYOPIA, THE IMAGES ARE FORMED WHERE...? | BOTH ANTERIOR TO THE RETINA
🗑
|
||||
| THE RATIO OF LIGHT ENTERING THE LENS TO THE RATIO OF LIGHT EXITING THE LENS IS... | TRANSMISSION
🗑
|
||||
| THE INSTRUMENT TO CHECK THE VERTEX DISTANCE... | DISTOMETER..
🗑
|
||||
| THIS LENS HAS THE SAME CURVATURE IN ALL MERIDIANS | SPHERE LENS
🗑
|
||||
| WHERE IS THE CRYSTALLINE LENS LOCATED... | BEHIND THE IRIS AND THE PUPIL..
🗑
|
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