| Show a I P o e e w Dr Richard L L Luekenga Lueena t a I Ik k Tinted glass advised for outdoor sports Its It's the light we cant can't see that is most harmful Light is a form of energy com com- comprised comprised of various wavelength lenth The human eye perceives only part of these wavelengths wave J Ultraviolet Ultraviolet and red infrared radiation is found at each end of the spectrum that thatIs thatis Is perceived by the human eye These particular radiations are harmful to the eye and can cause discomfort and pathological problems to the eye if if overexposed to them Just being exposed to the normal light spectrum can cause discomfort but by wearing the correct eye wear a lot of discomfort can be eliminated Ultraviolet rays are found In sunlight at high altitudes and Is reflected from the snow or the surface of water It is also found in ultraviolet lamps used in tann- tann tanning tannIng ing or light from welding Dark grey tinted lenses will absorb this radiation and evenly reduce the transmission of light without effecting color vision These lenses are favorable for the skier who likes to appreciate the terrain on which he is skiing Brown and green tints will also absorb ultraviolet but will affect color vision These are the more fashionable tints One note about red infrared radiation It Itis Itis is received only on looking directly into sunlight molten substances like glass glassand glassand and metal and red infrared lamps This radiation is extremely harmful and cause caliSe cataracts as well as destroy tissue in the back of the eye The best way to protect yourself is to not look directly into in- in into to the sunlight If you should work around molten glass or metal special lenses should be used to absorb the radiation Exposure to the normal light spectrum will not cause any pathological pro pro- problems problems but for those people who are ex- ex extremely extremely light sensitive or would like to feel more comfortable when playing ten ten- tennis tennis nis golf or any outdoor sport tinted lenses should be worn Again the grey lense is the best for reduction of glare an even reduction of the visible light spectrum are lenses that change color from Inside to outside Becoming a true sunglass sunglass when worn outside and becoming a more fashionable tint inside They come in grey or brown and are especially favored by those who are light sensitive They do not become a true sunglass when worn inside a car because the cars car's windshield blocks all of the ultraviolet radiation needed to turn the glasses to a darker color Light yellow glasses are not sunglasses They have been shown to be helpful for shooters skiers boaters and flyers They help by filtering out the scat scat- scattered scattered blue light and Improving contrast on hazy or foggy days Some people claim they help cut through the haze and enable them to see distant objects better Light pink tints also known as indoor tints are useful for persons plagued by overhead fluorescent lights These tints help reduce glare and ultraviolet radia- radia radiation radiation tion from ultraviolet lights Some coatings are applied to lenses to reduce glare These are mirrored coatings found on some sunglasses These are especially useful for persons who want extra glare protection over and above what a true sunglass gives reflection Anti coatings are used for people who are sensitive to reflections they receive with their glasses such as ghost Images and light reflections This coating is normally prescribed for torah all l Air Force pilots They are also useful for In- In Individuals Individuals with thick lenses or lenses |
