Near vision refers to the ability to see objects clearly at a close distance, typically within 16 to 20 inches. This skill is essential for activities such as reading, sewing, or using a smartphone. Near vision relies on the eye's ability to focus light on the retina, which is the light-sensitive layer at the back of the eye. As people age, they may experience a condition called presbyopia, where the eye's lens becomes less flexible, making it harder to focus on nearby objects. This is a common part of aging and often requires the use of reading glasses or contact lenses to improve near vision.