Final answer:
The loss of the ability to see clearly at near is known as presbyopia, a condition related to aging that affects close-up vision and is corrected with converging lenses.
Step-by-step explanation:
The loss of ability to see clearly at near is called presbyopia. This is a common vision problem associated with aging, where the eye gradually loses its ability to focus on close objects. Unlike myopia, or nearsightedness, where distant objects are blurred but close vision is unaffected, presbyopia affects the ability to see close objects clearly. With age, the lens of the eye loses flexibility, making it difficult to focus on nearby objects. This condition is often corrected by using a converging lens to add power for close vision.