Final answer:
Presbyopia is the condition affecting older adults where the eye's lens loses elasticity and the ability to focus on close objects, often corrected with a converging lens.
Step-by-step explanation:
The term used for an older adult who has nearsighted vision loss from changes in the lens is presbyopia. Presbyopia is a common vision problem associated with aging, where the eye gradually loses its ability to focus on close objects. This condition occurs because the lens of the eye may become less elastic with age, and the muscles that control the lens might lose power. Symptoms such as eyestrain and difficulty seeing fine print typically appear between the ages of 40 and 50. To correct presbyopia, a converging lens is used to add power for close vision, allowing the individual to focus on nearby objects. Although myopia, or nearsightedness, affects the view of distant objects and is corrected differently, presbyopia specifically involves the loss of the ability to accommodate for near vision as one ages.