Final answer:Presbyopia, which is caused by age-basedchangesin the lens, is a condition wherein the focus of images falls behind the retina, causing near objects to appear blurry. The ability of the eye to adjust its lens power for close vision, known asaccommodation, diminishes with age, leading to presbyopia. Vision correction usually entails using a converging lens to increase power for close vision.Explanation:Presbyopia is a visual defect in which the image focus falls behind the retina, making images in the distance clear, but close-up images blurry. This condition is caused by age-based changes in the lens. In other words, Viggo, who has presbyopia, has difficulty seeingnear objects clearly.The eye normally manages to produce clear vision by adjusting the power (and focal length) of the lens to accommodate for objects at various distances. This process is calledaccommodation. However, the loss of this ability to accommodate with age is what leads to presbyopia.Vision correction for presbyopia often involves the use of aconverging lensto add power for close vision, thereby enabling the individual to see near objects clearly.Learn more aboutPresbyopiahere:brainly.com/question/31664877#SPJ11...

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