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MrMxyzptlk

10 Iul 2012 12:26



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"Studies have shown that permanent damage to the eyes can result from prolonged exposure to the sun without adequate protection. Ultra violet (UV) light is the component of sunlight most responsible for eye damage. Excessive exposure, especially from light reflected from sand, snow or pavement, can produce a burn on the surface of the eye. Like a sunburn on the skin, eye surface burns are usually painful, but temporary.

Of more concern is the cumulative damage of repeated exposure that may contribute to chronic eye disease. UV exposure can affect not only its surface, but also its internal structures (the lens and retina).

UV light is a risk factor in the development of pterygium (a growth that invades the corner of the eyes), cataracts (clouding of the lens) and macular degeneration (breakdown of the macula)."

Ideea este ca un telescop aduna razele solare, asa si razele UV. Nu observi, este posibil sa te uiti, si probabil ca ai facut odata nu esti in pericol, insa iti imaginezi ca la razele UV la care ai expus ochii probabil reprezinta de 100 de ori cat ai fii expus daca nu te-ai fii uitat cu telescopul. Mai faci cateva data aceasta figura, si peste cativa ani te trezesti cu probleme majore la ochi si n-o sa stii oare de unde ... Nu merita riscul.