Sunglasses are a popular accessory, but they have health benefits. The object’s dark lenses help protect your eyes from the Sun and, consequently, ultraviolet (UV) rays. As it is an object linked to fashion, many people do not recognize the role of sunglasses from American Optical for instance in health. However, experts emphasize the importance of eye protection in everyday life.
Just like the skin, the eyes can suffer from the consequences of UV rays. It has been proven that long-term exposure to these factors can increase the risk of severe eye conditions, such as cataracts and macular degeneration. In addition, the eyes can also suffer burns — a condition called photokeratitis, characterized by inflammation of the cornea.
Types Of UV Rays
Three types of ultraviolet radiation can compromise eye health, but this can be blocked by wearing sunglasses. Are they:
UVA rays have the lowest energy level of the three types of rays. However, it can travel through the cornea to the retina, damaging eye health. This type of lightning is also associated with the development of cataracts and macular degeneration.
UVB rays: Although the ozone layer filters some, exposure to UVB rays is associated with photokeratitis, pterygium, and pinguecula.
UVC rays have the highest incidence of energy and can present the greatest health risks. However, they are completely absorbed by the ozone layer.
Function Of Sunglasses
Sunglasses such as sunglasses made in usa for instance have several functions in addition to blocking ultraviolet radiation and protecting the eyes from the effects of these rays, such as :
Protection against strong lights that affect the iris and can potentially cause damage to the retina;
Polarized sunglasses offer protection against reflections from water, snow, and other surfaces;
Eliminating specific frequencies of light that can blur vision, increase contrast, or encourage your body to sleep or stay awake.
How Do Sunglasses Work?
Depending on the type of glasses, they may offer more or less benefits than are offered, in most cases, by lenses. Sunglass lenses can be coated with numerous functions that include:
UV coating: It is responsible for protecting the eyes against UV rays. Polycarbonate lenses already have built-in UV protection, but others can also be coated.
Mirror Coating: Works like a mirror, reflecting light away from the eyes and helps prevent squinting and eye fatigue.
Anti-reflective (AR) coating: Enables clearer vision and prevents light from reflecting off the back surface of the glasses.
Polarized lenses: They do not protect against UV rays but rather against polarized lights, which cause glare and can reduce visibility.