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Optician Practical Exam Study Material Complete Questions And Answers 2023
Preview 2 out of 7 pages
Optician Practical Exam Study Material Complete Questions And Answers 2023 A lens focal length may be altered by? changing the curvature of one surface What controls the amount of light that enters the eye? iris Lights changing direction as it passes from one medium to another is called what? refraction Meniscus, equiconcave and flat concave are all, what? minus lenses What term is used to describe the eyes tendency to turn from its normal position? phoria Refractive condition where light focuses directly on the retina...? emmetriopia One convex and one concave surface is known as... a meniscus lens Best lens treatment to reduce water and road glare? polarized Establishes commercial
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