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ABO Review

ABO Review Session Volume 1

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