What is commonly associated with the age-related decline in vision known as presbyopia?

Presbyopia is the gradual loss of the eye's ability to focus on nearby objects, which typically becomes noticeable in people as they reach their 40s. This age-related condition occurs due to a hardening of the lens in the eye, which affects its flexibility and ability to change shape to focus on close-up images.

As a result, individuals with presbyopia find it increasingly difficult to read small print or see objects up close without the help of reading glasses or other visual aids. This decline in near vision is a natural part of the aging process and is a key characteristic of presbyopia, making the option related to the decreased ability to see near objects the correct one.

In contrast, the other options do not correctly represent the effects of presbyopia. Increased eye pressure is more closely associated with glaucoma, while enhanced color perception and improved contrast sensitivity are not typically linked to presbyopia, but rather to other visual functions that may remain unchanged or even improve in some circumstances as one ages.