Fish Lake Manitoba Narrows

Sunlight can be even more damaging to the eyes than to the skin. The short waved ultra-violet rays can damage the outer part of the eyeball while the longer waved infrared rays can penetrate through the lens and burn the retina, the working part of the eye where visual images are made. Ultra-violet injuries produce the irritation known as snow blindness, while infra-red damage occurs when looking directly at the sun, and is most often seen as “eclipse blindness.”

Sunglasses are the answer. The primary purpose of this important bit of equipment is to reduce excessive brightness while still allowing the wearer to see clearly. They will also absorb some of the harmful infra-red and ultra-violet rays which can damage the eye. Sunglasses lenses are recorded as having transmission or density values representing the amount of light which reaches the eye; a measurement of 10 to 20 percent is best for beach or snow.

Fish Lake Manitoba Narrows

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