Question

Why do people over 55 often need reading glasses? a. Their cornea no longer focuses correctly. b. Their lens no longer focuses correctly. c. Their eyeball has elongated with age, causing images to focus in front of their retina. d. Their retina has thinned with age, making vision more difficult.

Short answer

The correct option is b.

Step-by-step solution

Step 1. Introduction

Hyperopia or farsightedness is a vision condition in which a person can clearly see far objects but nearby object appears blurry.

Step 2. Explanation of the correct option

The correct option is b because far-sightedness usually occurs in old age in which the cornea is unable to refract light properly as a result point of focus by the lense fall behind the retina.

Step 3. Explanation of the incorrect option

Option a is incorrect because the point of focus by the lens falls behind the retina instead of the point of focus by the cornea.

Option c is incorrect because the point of focus by the lens falls behind the retina.

Option d is incorrect because the point of focus by the lens falls behind the retina.