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Ultraviolet Light and Vision |
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Ultraviolet Light and Vision |
| UV Light and Vision, discount contact lenses |
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Contact Lenses > UV-light-and-visionUltraviolet Light and It's Effect on the Eye and VisionHuman beings only see a portion of the whole electromagnetic spectrum of light from the sun. Ultraviolet (UV) and infrared (IR) lights are both imperceptible to the human eye. Light is measured in wavelengths usually expressed as nanometers (nm). What humans see, called the visual spectrum, falls between 400 and 700 nm. We do not see UV light because it falls below the visual spectrum (100-400 nm). UV light is broken down further into UVA (320-400 nm), UVB (280-320 nm) and UVC (100-280 nm). UV light in the 300-400 nm range is found in sunlight, close to the purple and blue range of the visual spectrum, and is also used in slow tanning booths. This light (also called Near-UV light) has been implicated as a cause of cataracts and corneal disease. Prolonged exposure to UV light can also cause corneal burns and abnormal growth of tissue in the eye (pterygia). The following chart shows UV light relative to the visual spectrum (and the entire electromagnetic spectrum of light), it's effects on the human eye and how to prevent damage to the eyes at the different levels.
In summary, your best protection from UV light will be sunglasses, protective eyewear, UV-blocking contact lenses, hats and avoidance.
Additional site references for UV-blocking contact lenses and recommended suppliers:
This article is for informational purposes only. For additional information regarding the latest advancements in this area, consult with a qualified eye care specialist. Any and all materials provided on this web site are for information purposes only. Have your eyes examined regularly and always follow your eye care professional's instructions for the proper use and care of your contact lenses. |
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