A major issue among patients is having trouble reading and seeing street signs. Most occurrences of hazy vision in younger people require prescription glasses to correct them. However, in elderly people, age-related changes within the eye may be the culprit. Opacities in the crystalline lens known as cataracts reduce eyesight by scattering light. Nuclear sclerosis, cortical degeneration, and posterior subcapsular cataract are the three main kinds of age-related cataracts. A cataract can be treated by changing the prescription for your glasses, donning glare-reducing sunglasses, and ultimately having cataract surgery to remove the clouded crystalline lens. The structure of the human lens, cataract symptoms, cataract treatment, and the function of the primary care physician are all covered in this article.