To the naked eye, ultraviolet light is opaque. UVA, UVB, and UVC are the three forms of ultraviolet radiation. UVA rays are closer to visible light rays, and they can travel through the cornea and through the lens and retina of the eye. UVA toxicity can result in cataracts and macular degeneration. The ozone layer typically blocks UVB and UVC rays, but when the ozone layer depletes, these rays may get through, causing extensive damage to the skin and eyes.
Sunglasses in Sri Lanka, have become a common decoration and even a fashion item. Sunglasses, on the other hand, do not obstruct UV rays either because they have dark lenses. For sunglasses to shield your eyes, the lenses must have 100 percent UV protection. The ability to assess how much a lens blocks UV rays is available to eye care practitioners. Often request lenses that are 100 percent UV protected.
The amount of UV protection provided by sunglasses has nothing to do with the color or darkness of the lenses. Sunglasses with dark lenses that do not obstruct UV rays can be much more harmful than not wearing them at all. By dilating or contracting, the pupil (the dot in the middle of the eye) determines how much light is released into the eye. In the dark, they normally dilate to let more light in. As a consequence, when wearing darkened glasses, the eyes open wider to let more light in. If the lenses on your sunglasses don’t block UV rays, you might be letting in more UV light than when you’re not wearing them. Hence, with the plethora of designs available, you can choose the best sunglasses online in Sri Lanka.
In the sun, polarized lenses minimize glare and have significant visual relief. Horizontally polarized light is transmitted from horizontal surfaces, such as a flat lane, and flows in a more horizontal direction. This results in a disconcerting strength of light, which we perceive as glare. This obstructs our vision and is potentially dangerous, especially while driving. Polarized lenses have a special filter that reduces glare by blocking this kind of intense reflecting light. Your optician should have polarization testers on hand to be able to choose the best lenses for you. Polarized and UV-protective lenses are needed in the perfect sunglass. And, of course, be chic!
Oversized and Wraparound Frames – The greatest defense comes from sunglasses that are made to prevent UV rays from reaching any portion of your eyes. On a windy day, these kinds of shields are also useful for preventing tiny objects from crashing into your eyes.
If you wear contact lenses or contacts, that doesn’t mean you don’t need sunglasses. Although certain contact lenses provide some UV protection, they are not meant to provide maximum protection. Standard glasses often do not shield the sight from the light. If you wear lenses, you should invest in a nice pair of sunglasses. Your eyes are not safe if you do not have photochromic lenses that darken in the sunshine, so prescription sunglasses might be a good choice for you.
If you fail to wear sunglasses every now and then, your eyes are unlikely to be permanently harmed. Prolonged sun penetration, on the other hand, has a long-term and lasting effect on the wellbeing of the skin and vision. Long-term exposure to the skin affects your eyes and cornea, potentially leading to cataracts. The easiest way to reduce permanent sun exposure is to wear shades and a brimmed hat.
Sunglasses aren’t just about showing off your style. While they can appear attractive on your face, good sunglasses are designed to shield your eyes from harmful UV rays. If you buy them from a supermarket or convenience store on a daily basis, make sure to read the label before purchasing the next pair. Sunglasses aren’t always made equal. Make sure yours have polarized lenses that block up to 100 percent of the sun’s ultra violet rays.