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ABO PRACTICE TEST
| Question | Answer |
|---|---|
| A pupilometer is used to measure the | |
| If a patient misses two letters on the 20/30 Acuity line that acuity should be recorded as | |
| The instrument of the optician commonly used to measure vertex distance is called a | |
| A toner meter is used to measure | |
| Lens calipers are commonly used to measure | |
| A retinoscope is used to | |
| The instrument that provides information on the patient's refractive status by reflecting light off the retina is | |
| Lensometer measures the | |
| A polariscope is used to check inserted lenses for | |
| If the lensometer mires cannot be centered in the central portion of the lensometer target the lens probably contains | |
| To physically measure the location of a cylinder the optician would use | |
| When verifying an ADD with a lens clock a plus 2.75 ADD wood clock _______in the distance portion and_____ in the segment | |
| Which is not a possible solution for the frame setting too high on the face A. Stretch the bridge if plastic B. Spread the nose pad C. Band the guard arms down D. Choose a different frame | |
| The patients are Xs - 2.00 - 0.50 x 120 add +3.00 w/50% trifocal. The RX through the intermediate portion of the trifocal will read | |
| If your lens ammeter reads -0.25 with no lens, a lens that measure -3.00 -1.50 x 180 is actually | |
| Where will the optical center appear in lensometer when neutralizing a right lens for Base Down prism | |
| To increase the temple spread one should | |
| The first step in performing manual lensometry is to | |
| Prior to the adoption of the prescription release rule, it was not ________ for the prescribing eye doctor to give the consumer the eyeglass prescription | |
| According to ANSI standards, mounted multifocal lenses segments should match a level within ______ mm specifications | |
| The tolerance for lens thickness with specified for special prescription purpose is | |
| ANSI Z 80.1 recommendation for prescription at ophthalmic lense allows tolerance for power Sphere of | |
| According to Anis standards, basic prescription safety lenses shall not be less than________ in thickness | |
| The tolerance of the cylinder axis of the right length is OD + 2.00 + 2.00 x 90 OS + 3.00 + 1.00 x 95 Add + 2.00 OU FT25 | |
| Progressive lenses are used to correct for a condition called | Presbyopia |
| Materials that best produce polarized light by reflectance are called | |
| Overall Temple measurement is most often stated in | |
| Coating lenses by depositing a metallic film such as magnesium fluoride on the surface of a finished lens is done for the following reason | |
| The use of multifocal lenses is associated with | Presbyopia |
| What is the advantage of a short Corridor Progressive design | |
| Some characteristics of minus lenses include | |
| To mount a lens in a nylon suspension type frame comma it would be necessary to _____â¬the lenses | |
| The modern lens material thought to have the most resistance to impact is | Trivex |
| When fitting Progressive power lenses, certain critical measurements are taken, one of the most important is the | Monocular pupillary measurement |
| The most common used prescription for correcting muscle imbalance in a case of esotropia would be | |
| Standard transmission in Sun lenses should range between | 15 and 30% |
| The lower the Abbe number | More the chromatic aberration |
| The type of bridge on a plastic frame designed entirely on nose pads is the | Full saddle |
| If a person has exposure to sunlight at least two hours or more during the day ______. | |
| Aspheric lens surface are most commonly used for | |
| Most compound ophthalmic lenses have | |
| The progressive power lens has a progressive Zone after where power | |
| The optical center of a lens is | |
| When the optician advises the consumer as to the breakage of lenses, the risk of injury should be described in terms of | Impact-resistant |
| When using the boxing method to measure a lens the "A" Dimension refers to | The distance across the lens at the widest point |
| OC placement and verification is important to ensure | That there is no unwanted Prismatic effect |
| Iseikonic lenses are used for the correction of | Aniskekonia |
| Amblyopia is frequently treated with | Occlude lenses |
| The human eye is held in place by _____ small muscles | 6 |
| The tendency of the eye to deviate from its normal position is called | Phoria |
| When the eyes are in a relaxed State the greatest refraction occurs at the |
Created by:
Tuxgirl