NURSE-UN 1435 Study Guide - Midterm Guide: Ectropion, Entropion, Presbyopia
26 Oct 2018
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Disorders of visual function: compare and contrast entropion and ectropion, entropion/ectropion relate to the lower lid. These issues need to be addressed, can be fixed with surgery or different tapes. Ectropion lid turns out, dry eye: describe changes in eye structure that occur with nearsighted and farsighted vision, disorders of refraction, myopia (nearsightedness): People can see close objects clearly, but objects father away appear blurred. This occurs if the eyeball is too long or the cornea is too curved. As a result, light e(cid:374)te(cid:396)i(cid:374)g the e(cid:455)e is(cid:374)"t fo(cid:272)used (cid:272)o(cid:396)(cid:396)e(cid:272)tl(cid:455) a(cid:374)d distant objects look blurred. Correction: concave-surface lenses: hyperopia (farsightedness), distant objects are usually seen clearly but close ones do not come into proper focus. This occurs if your eyeball is too short or the cornea has too little curvature, so light entering your eye is not focused correctly. Correction: convex-surface lenses: disorders of accommodation (accommodation = the adjustment of the lens/eye to variations in distance)
