How does Ultra violet (UV) rays affect my vision??
Sunlight is major source of UV rays.
There are 2 types of UV rays namely UV-A and UV-B. Over time UV rays may cause number of eye problems.
can hurt your central vision. It can damage the macula, a part of the retina at the back of your eye.
The front part of your eye (the cornea and the lens) absorbs most UV-B rays, but these rays may cause even more damage to your eyes than UV-A rays
UV rays may lead to macular degeneration, a leading cause of vision loss.
UV rays, especially UV-B rays, may also cause some kinds of cataracts. A cataract is a clouding of the eye’s natural lens, the part of the eye that focuses the light we see.
Another UV-related problem is a growth called pterygium. This growth begins on the white of the eye and may involve the cornea. Eventually, the growth may block vision. It is more common in people who work outside in the sun and wind.
Skin cancer around the eyelids is also linked to prolonged UV exposure.
Corneal sunburn, called photokeratitis, is the result of high short-term exposure to UV-B rays. Long hours at the beach or skiing without proper eye protection can cause this problem. It can be very painful and may cause temporary vision loss.
How to protect your eyes from UV rays
- Always use goggles whenever you are in sunlight.
- Use of transition lenses of good quality helps a lot to reflect back UV rays from your spectacles/ glasses.
- There are certain light sources even at home which emit UV rays, replace them with the non-harmful ones.
- Use of polarised sunglasses also helps to protect against UV rays