NCLE Study Questions with Correct Answers

NCLE Study Questions with Correct Answers annular bifocal contact - Answer-A lens with distance portion ground into the center of the lens and the near portion ground into the periphery aphakic lenses - Answer-lenses designed for post-cataract fitting apical zone of cornea - Answer-the central portion of the cornea with a constant radius of curvature. Also called the corneal cap. artificial tears - Answer-medications, many of them over the counter, to treat dry eyes aspheric lens - Answer-A non-spherical lens, in which the radii of curvature increase towards the periphery rather than remaining equal at all points. Aspheric lenses reduce optical aberration and improve resolution. bactericide - Answer-a chemical that disinfects and kills pathogenic organisms. benzalkonium chloride - Answer-a preservative used in contact lens solutions because of its germicidal qualities biomicroscopy - Answer-Ophthalmic examination of the eye by use of a slit lamp and a magnifying lens; also known as a slit-lamp exam. 10 to 50 times magnification bullous keratopathy - Answer-corneal edema with painful blisters in the epithelium due to corneal endothelial dysfunction. treated frequently with a therapeutic soft lens.