Section Date NIT Check Your Understanding Critical Thinking and Application Ques

Question

Section Date NIT Check Your Understanding Critical Thinking and Application Questions REVIEW 1 A person who visits the eye doctor is often given eye drops containing the drug atropine to dilate the pupils A side effect of this drug is paralysis of the ciliary muscle, an effect called cycloplegia. Will a person with cycloplegia have difficulty with near vision or distance vision? Explain. 2 The disease macular degeneration is characterized by a gradual loss of vision as a result of degeneration of the macula lutea. Considering the type of cells located in the macula lutea, whidh a sufferer of macular degeneration would lose? Why? 3 LASIK, or laser-assisted in situ keratomileusis, is a surgical procedure on the eye that millions of people have undergone to improve visual acuity. It involves the use of a laser is to reshape the cornea in individuals suffering from astigmatism, near-sightedness (myopia), or far-sightedness (hyperopia). How could changing the shape of the cornea affect one's visual acuity? 4 Explain why infectious otitis medíia (inflammation of the midle ear) may result in a simultaneous pharyngitis (inflammation of the throat). General and Special Senses UNIT 15417

Explanation / Answer

1) Cycloplegia causes paralysis of ciliary muscles. This results in difficulty in accommodation as curvature of lens can no longer be adjusted to focus on the near objects. So, cycloplegia affects near vision.

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