Do you know just like your skin, eyes can get damaged from UV Radiation. That’s why you should protect your eyes from sun-related damages.
Source of UV Radiation
The primary source of UV radiation can be from the Sun. Man-made ultraviolet sources include several types of UV lamps, arc welding, and mercury vapour lamps.
Excessive UV Radiation exposure can cause several ocular health conditions like,
- Macular Degeneration
- Solar Retinopathy
- Photokeratitis & Photoconjuctivitis
- Skin cancer
Cataracts can be the leading cause of blindness in the world. According to World Health Organisation definition, Cataracts is clouding of the lens of the eye which prevents clear vision. During recent years, various researchers evidently show ultraviolet (UV) radiation increases the incidence of age-related (senile) cataracts1)Cheng, H. Causes of cataract. Age, sugars, and probably ultraviolet B radiation. Br. Med. J. 298: 1470-1471(1989)..
The retina can be photochemically damaged by long-term exposure to UV and blue regions of the spectrum 2)Weiter, J. J. Phototoxic changes in the retina. In: Clinical Light Damage to the Eye (D. Miller, Ed.), Springer-Verlag, NewYork, 1987, pp.79-125.. The foveal region of the retina is injured and the condition is called as solar retinopathy. Other conditions which are linked with UV exposure are Age-related Macular Degeneration.
A Pterygium is elevated, wing-shaped outgrowth in the conjunctiva. And is more of cosmetic blemish linked with prolonged exposure to UV-B radiation and does not affect the vision. But if it invades cornea it obviously affects the vision.
Photokeratitis & Photoconjuctivitis [corneal sunburn]
Photokeratitis is an inflammation of the cornea and Photoconjunctivitis refers to the inflammation of the conjunctiva. This inflammation can be very painful and can be caused by high exposure to UV-B rays. This can be reversible but severe inflammation can cause chronic irritation.
Prevent Eye from UV Radiation
The eye can be protected from many different ways. Effective methods listed below3)Slinley, D. H. Eye protective techniques for bright light. Ophthalmology 90: 937-944 (1983).:
- Goggles with narrow slits; like Eskimos.
- Hats with large brims.
- And can finally with protective glasses.
References [ + ]
|1.||↑||Cheng, H. Causes of cataract. Age, sugars, and probably ultraviolet B radiation. Br. Med. J. 298: 1470-1471(1989).|
|2.||↑||Weiter, J. J. Phototoxic changes in the retina. In: Clinical Light Damage to the Eye (D. Miller, Ed.), Springer-Verlag, NewYork, 1987, pp.79-125.|
|3.||↑||Slinley, D. H. Eye protective techniques for bright light. Ophthalmology 90: 937-944 (1983).|