What is presbyopia?

Presbyopia is primarily defined as the gradual loss of the eye's ability to focus on nearby objects, which typically occurs as people age. This condition arises due to the natural hardening of the lens inside the eye, making it less flexible and reducing its ability to change shape for near vision. As a result, individuals with presbyopia find it more challenging to read small print, thread a needle, or perform other tasks that require close-up vision, particularly after the age of 40.

The other choices do not accurately define presbyopia. While presbyopia does affect older adults, it is specifically related to difficulty seeing close objects clearly rather than distant ones. Additionally, color vision defects pertain to a different aspect of vision entirely, focusing on the ability to perceive colors rather than the ability to focus at varying distances.