The disease macular degeneration is characterized by a gradual loss of vision as

Question

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, which type of vision do you think a sufferer of macular degeneration would lose? Why?

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?

Explanation / Answer

macula lutae is the yellow oval part present in center of retina.it contains high concentration of cone cells.these are the photo receptor cells which are resposible for colour vision or vision in bright light.this area useful for sharp vision.

in the macular degeneration detoriatiion macula luate occur which leads to complete loss of central vision because macula lutae is the organ which is responsible for central vision and acuity.

dialation pupil results in clear distance vision and constriction of pupil results in clear near vision.

cycloplegia is the condition in which paralysis of cilliary muscle occur.it results in the loss of accomodation(unable to change the shape of lens.because of paralysis of cillary muscle the curvature of lens can no longer be adjusted to focus on near vision.so the patient have difficulty with near vision.

use of scopolomine is better than use of atropine.

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.