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| 1. ___________ is a controlled medical device and is regulated by the _____________ . |
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A.
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Contact lenses; EPA |
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B.
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Contact lenses; FDA |
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C.
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Spectacles; OSHA |
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D.
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Contact Lenses; ANSI |
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| 2. Contact lens fitting should be done by a trained professional because |
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A.
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The general public is not expected to understand the physiology of the eye and the potentially damaging effects of contact lenses on the eye |
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B.
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Anyone can fit a contact lens |
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C.
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Legislation describes the responsibilities for spectacle and contact lens sales |
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D.
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All of the above |
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| 3. All of the following are functions of the tear film except |
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A.
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Lubrication of the sclera and cornea |
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B.
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Removal of debris |
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C.
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Oxygenation of the cornea |
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D.
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Osmotic liquid transport between cornea and aqueous |
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| 4. The tears contribute most to clear vision because they |
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A.
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Create a tear lens behind the contact |
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B.
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Provide a smooth surface of refraction |
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C.
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Protect the eye from infection |
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D.
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Are anti bacterial |
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| 5. Dry eyes can be caused by a breakdown of which layer of the tear film? |
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A.
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The anterior most layer, composed of lipids |
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B.
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The middle aqueous layer |
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C.
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The inner mucoid layer |
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D.
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Any of the above |
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| 6. Too little lens movement or too little tear film interchange can result in |
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A.
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A well fitted lens |
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B.
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A lens that is too loose |
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C.
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Corneal edema |
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D.
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Keratoconus |
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| 7. All of the following are lid functions except |
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A.
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Protection of the globe |
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B.
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Corneal oxygenation |
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C.
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Distribution of the tear film |
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D.
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Production of tears. |
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| 8. GPC is the initials for |
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A.
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Giant papillary conjunctivitis |
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B.
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A cobble stone appearance of the lid underside |
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C.
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A condition often seen on soft contact lens wearers |
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D.
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All of the above |
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| 9. The cornea is composed of |
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A.
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3 layers |
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B.
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4 layers |
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C.
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5 layers |
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D.
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7 layers |
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| 10. The renewal of the top layers of the corneal epithelium |
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A.
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Takes about 7 days |
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B.
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Allows for quick repair after minor injuries |
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C.
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Helps maintain good corneal health |
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D.
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All of the above |
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| 11. The excessive intake of fluid into the stroma is called |
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A.
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Corneal edema |
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B.
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Stromal alignment |
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C.
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Bowman's syndrome |
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D.
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Epithelial reduction |
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| 12. The cornea must be nourished by the tears and aqueous because |
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A.
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It requires excessive oxygenation |
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B.
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It is avascular |
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C.
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It requires additional fluid interchange |
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D.
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All of the above |
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| 13. What factors significantly affect a patient's contact lens wearing schedule? |
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A.
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dk value |
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B.
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Lens thinness |
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C.
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Presence of edema |
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D.
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All of the above |
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| 14. Fitting “on K” for gas permeable lenses means fitting |
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A.
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The steepest corneal meridian |
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B.
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The median curve between the steepest and flattest |
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C.
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The flattest corneal curve |
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D.
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Can be any of the above |
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| 15. The tear lens |
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A.
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Neutralizes corneal astigmatism |
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B.
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Neutralizes sphere power requirements |
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C.
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Improves contrast sensitivity |
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D.
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Reduces contrast sensitivity |
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| 16. Keratoconus involves degeneration of the |
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A.
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Stroma |
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B.
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Basement membrane and Bowmen's layer. |
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C.
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Descemet's membrane and the endothelium |
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D.
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The endothelium |
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| 17. The conjunctiva |
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A.
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is an interface between lid and eye |
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B.
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has an epithelium and stromal layer |
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C.
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Is protective of the eye and orbit |
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D.
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All of the above |
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| 18. Contact lens wear is contraindicated in which of the following conditions? |
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A.
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Compound myopic astigmatism |
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B.
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Conjunctivitis |
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C.
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Aphakia |
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D.
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Punctum remotem |
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| 19. Too small a GP lens diameter may cause all of the following except |
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A.
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Seeing around the optic zone produces unacceptable blurring |
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B.
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Tinted lens edges are in the field of view |
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C.
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Increase in the field of view |
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D.
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Night vision and tinted lenses |
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| 20. An indication of a poorly fit lens is |
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A.
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Conjunctival injection |
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B.
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Corneal Edema |
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C.
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A lens edge in the normal field of view |
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D.
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All of the above |
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