Question

What naturally happens to the musculature of the iris with old age? What are the implications?

A. The musculature of the iris becomes stronger, improving vision.
B. The musculature of the iris weakens, causing difficulty in adjusting to different light levels.
C. The musculature of the iris remains unchanged with old age.
D. The musculature of the iris becomes more flexible, allowing for better focus

Answer 1

The musculature of the iris weakens with old age, causing difficulty in adjusting to different light levels. This condition is known as presbyopia. It is a vision problem associated with aging, where the eye gradually loses its ability to focus on close objects.

Step-by-step explanation:

The muscles that control the shape of the iris in the eyes weaken with old age, causing difficulty in adjusting to different light levels. This condition is known as presbyopia. It is a common vision problem associated with aging, where the eye gradually loses its ability to focus on close objects. The loss of elasticity in the lens and the weakening of the muscles that control the lens contribute to this vision problem.