Question

Astigmatism in emmetropic eye of elderly person contribute to:

• A. +1d
• B. +2D
• C. +3d
• D. +4d

Answer 1

The Correct Option is C

The question pertains to the eye condition called astigmatism, specifically in the context of an elderly person with an emmetropic (normal) eye. Astigmatism is a refractive error causing blurred vision, usually due to the irregular shape of the cornea or lens inside the eye. In emmetropic eyes, the eye focuses light correctly on the retina. However, astigmatism can still occur due to changes associated with aging.

In the elderly, physiological changes can lead to a progression or worsening of astigmatism, contributing to an increased refractive power requirement. Among the given options, +3D represents the common adjustment needed for the additional power required to correct astigmatism in such cases. Here, +3D indicates that the corrective lenses should add 3 diopters of lens power to adequately compensate for the refractive discrepancy presented by the astigmatism.

Therefore, the contribution of astigmatism in an emmetropic eye of an elderly person is best represented by +3 diopters.

This understanding helps in selecting the appropriate lenses to manage vision issues stemming from astigmatism. To address this problem, one should choose the corrective lens option of +3D.