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Cataracts are one of the most common eye diseases affecting vision. The lens loses
its transparency during aging process as a result from the damage of photon energy
in the surroundings; hyper oxidization, and metabolic deposit. This is cataract, and
it is a normal degeneration. All people will have cataract eventually if they live
long enough. However, some prevention methods can be adopted to delay the onset or
progression of cataract, such as sun protection with hat and sunglasses; intake of
foods containing anti-oxidation elements, like grains and nuts.
It is not always cataract as the cause of vision deterioration in old people. There
are many diseases that cause vision problem, such as aged macular degeneration;
glaucoma, corneal degeneration; optic neuropathy; diabetic retinopathy, or even
brain lesion. Do visit your ophthalmologist for help when vision is decreased. A
battery of thorough examinations to exclude all possible diseases is mandatory to
undergo treatment in time and to save the vision.
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