Which of the following is the most common reason for visual impairment

Which of the following is the most common reason for visual impairment in older adults?

a. Cataracts
b. Glaucoma
c. Macular degeneration
d. Presbyopia

ESSAYBID ANSWER

ANS: A
Among older adults, the three most common pathological eye conditions are cataracts, macular degeneration, and glaucoma. Cataracts are the leading cause, as well as the most reversible cause, of visual impairment in older adults. A cataract is a clouding of the normally clear lens of the eye. Age is the single greatest risk factor for cataracts. By age 65 years, some degree of lens clouding has developed in half of all Americans, although it may not impair vision. Presbyopia, loss of elasticity of the lens of the eye causing difficulty with near vision, generally occurs in the 40s.