The cataract is formed by progressive opacification of the eye lens (the lens that focuses the light on the retina).
The eye lens is composed principally from water and protein. When proteins fibers break and accumulate, it creates an opacification that puts a block some of the light projected on the retina and elicits the blurred image. In time, the eye lens may even get a yellowish or brownish color, which can make more difficult the detection of dark colours. Most of the cataracts owe to age.
The symptoms of cataract appear progressive along with the aging process:
- the decrease of the vision
- sensation of dizziness
- glare sensation in bright light
- disorders in color vision
In most of the cases, these signs appear after the age of 60, but are also rare cases in which they appear at the age of 50 years. The eye lens is the responsible one; becomes like a “mat window”.