Usability of black sunglasses

usage of sunglasses not just to look fashionable, but also can protect the eyes from the hot sun. Powerful enough sunglasses protect the eyes from UV radiation (UV) which can be very damaging if the eye in a short time. Quoted from HealthDay, Tuesday (24/08/2010),
the risk of short-term damage can be prevented with sunglasses include burning eyes (photokeratitis).
Damage is characterized by inflammation of the cornea, which if left unchecked can cause cell death in that section. Such inflammation can also occur on the conjunctiva, which is part of the eye white. Although in pain, inflammation in both parts could still be easy to cure. As for the long term, damage from UV rays can accumulate and cause more serious disorders. Among

Pterygium
is an abnormal growth of the conjunctiva or the white part of eye.which can be caused by too much sun exposure. This abnormal growth will damage the cornea, so that impair vision. There is no other way to overcome this disorder except by surgery. And that's still leaves a chance of recurrence, because the conjunctiva that is damaged is basically difficult to regenerate.

Cataracts
In patients with cataract, the lens color is clear turn into turbid thereby blocking the incoming light. Ultraviolet rays emitted by the sun are thought one of the main causes of these disorders.

Macular degeneration
Ultraviolet rays can also damage the retina, the thin layer at the back of the eye that serves catch the light. The damage also affects the function of the macula, the center point of the retina as well as the center of vision.

Cancer
The surface of the eye cancer may develop melanoma, a malignant cancer caused by ultraviolet rays that require surgery to resolve it. Whereas in the eyelids, the sun also causes the risk of basal cell carcinoma.

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