Anti-UV húðun fyrir sólgleraugu

Ein af orsökum sumra alvarlegustu augnsjúkdómanna er útfjólublátt ljós. Samkvæmt tíðni og bylgjulengd er útfjólubláum geislum skipt í tvo flokka: útfjólubláa A og útfjólubláa B.

As a natural eye protection mechanism, the cornea of people's eyes can absorb all the ultraviolet B and most of the ultraviolet A. However, some of the ultraviolet A will reach the lens of the eye. Long-term absorption of ultraviolet A may cause cataracts. A small amount of ultraviolet A that passes through the cornea to reach the retina can cause macular degeneration, which is the main cause of blindness in people over 65. Long-term exposure to strong ultraviolet light can cause eye cancer or actinic keratitis, which is a burn of the retina. This situation often occurs in the sunny outdoors after snow in winter. The snow surface reflects the sun's glare, so it is usually called snow blindness.

Sunglasses have a good anti-ultraviolet coating that can eliminate ultraviolet radiation. You must ensure that your sunglasses can filter out both types of ultraviolet rays 100%. The label of the sunglasses should indicate what degree of UV protection the sunglasses can provide, and what you need is 100% protection.