Why Are Some People Short Sighted?
“Short Sighted” actually refers to something other than actual visual acuity. It means they consider only the immediate situation or the immediate effects of an action. An example would be eating some extra dessert while ignoring the long-term damage to your health. ‘The ‘short’ refers to time rather than distance. If, however, you are asking about vision, then the correct name is ‘near sighted’ or myopic. (It’s interesting to note that ‘myopic’ is sometimes used to refer to ‘short sighted’ as described above.) But near sighted, while it has genetic causes in young people, is something that older people always get. The lens in your eye gets pulled flat by small muscles surrounding the lens when you are focusing on distant objects. When you focus on close objects, the muscles relax and depend on the lens itself to pull inward and thicken. But with age (45 – 50) the lens becomes stiff and fails to thicken when those small muscles relax. So the eye fails to focus on near objects. That is
