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If the wearer complains of the bifocal line being somewhat in his way when driving, the problem may be alleviated by decreasing the distance between pads. True or False - Answer- False If the wearer complains that the glasses feel snug but still slip down the nose, one likely cause is that: ...

When discussing thick lenses, the factors which are considered in computing the lens power are: a. front curve, thickness and index b. back curve, thickness and index c. front curve, back curve and thickness d. front curve, back curve, thickness and index - Answer- d. front curve, back curve, ...

What controls the amt of light entering the eye - Answer- Iris Meniscus, equiconcave and flat concave are types of: - Answer- Minus lenses What is the term used to describe the eye's tendency to turn from its normal position? - Answer- Phoria What kind of lens has one convex and one concav...

To mount a lens in a nylon suspension type frame, it would be necessary to _______ the lens. a) Drill b) Notch c) Groove d) V-Bevel - Answer- c) Groove The optical center of a lens is: a) At the geometrical center b) One the 180 line c) At the point where the "a" and "b" measuremen...

The part of the lensometer which is capable of measuring the amount of prism is the: A. reticle B. axis wheel C. spotting device D. power drum - Answer- A. reticle Which of the following is a lensometer not capable of measuring? A. sphere power B. cylinder power C. base curve D. po...

Six - Answer- The extra-ocular muscles are inserted into the sclera and serve to rotate the eye in all possible directions. There are _____________ muscles in each eye. Sclera and cornea - Answer- The fibrous tunic is compromised of the: In the brain - Answer- Fusion occurs: The ciliary bod...

When taking seg height measurements, which of the following situations could result in a parallax error? - Answer- Patient sitting/ dispenser standing erect Which of the following is not significant in identifying the problem of vertical imbalance? - Answer- Patient's age Which of the followi...