What visual impairment is characterized by the inability to focus on near objects?

The inability to focus on near objects is primarily associated with presbyopia. This condition typically occurs as a natural part of aging, generally starting in the early to mid-40s. It results from the gradual loss of elasticity in the lens of the eye, making it more difficult to focus on close-up tasks, such as reading or sewing.

In contrast, myopia refers to nearsightedness, where distant objects appear blurry while close objects are seen clearly. Astigmatism is caused by an irregular curvature of the cornea or lens, leading to distorted or blurred vision at all distances. Hyperopia, or farsightedness, presents the challenge of seeing near objects clearly while distant vision may remain adequate.

Recognizing presbyopia as the correct answer highlights the unique changes in vision that occur with age, typically necessitating corrective lenses for close work.