Sunglasses can be found in a variety of different models with varying shapes, materials, and colors with or without a prescription. Below you will find some of the more common sunglass features that you can get for your vision enhancement and eye protection. As you will see there are countless benefits of wearing sunglasses.
Frequently Asked Questions You May Be Interested…
1. Should athletes need sunglasses for playing sports2. Should I still be concerned about UV rays?3. Sunglass lenses to choose4. Prevent damage to my eyes5. How about impact-resistant lenses
One of the most basic feature for all sunglasses is complete protection against the potentially damaging effects of the sun’s ultraviolet-A and ultraviolet-B rays. You should never purchase dark tinted sunglasses that do not offer 100 percent UV protection. Why? Because sun glasses make the pupil of the eye dilate and open up to allow more light in which, in turn, allows UV rays to easily enter the eye. If your sunglasses lack complete UV protection, they can result in damage to your eyes.
Polarized sunglasses reduce bothersome glare from flat surfaces like snow, water, roads and other reflective surfaces. By removing the glare, polarized sunglass wearers see better and have less eye fatigue as they need to squint less. These advantages are critical to drivers, airline pilots, heavy- equipment operators, outdoor enthusiasts like hunters and fishermen and many athletes like skiers, golfers and ball players.
Glasses tend to fall or rub up against objects so it’s important to consider the material used for the lens. Consider impact-resistant sunglasses as they resist breakage when dropped or mishandled. Lenses made of a trade-name plastic called CR-39 are lighter than glass and even more resistant to breakage. Glasses made of high-index plastic are even lighter than CR-39 glasses and have a coating that protects them against scratching.
Photo-cromic sunglasses have lenses that are designed to brighten or darken in response to the intensity of sunlight. When outdoors the lens are dark providing the maximum protection. But when you go indoors, where the lighting is lower, the optics lighten allowing the sunglass wearer to see better in low light conditions.
When sunglass wearers get rain, mist, or fog on the lenses it becomes near impossible to see clearly. However, water sheeting is a feature that helps preserve visual acuity even when the lens are exposed to water and get wet. Water-sheeting allows the water to form in a see-through sheet on the lens rather then in individual droplets that block or distort vision. Water sheeting lens are essential for fishermen out on the water in the early morning mist.
Benefits of Sunglasses
A pair of sunglasses, at first glance, may appear to be simple. It is merely two pieces of colored glass or plastic secured in some type of plastic or metal frame. That seems basic enough. As it turns out, there are a number of different things that you can do with these two pieces of glass or plastic that could result in a significant effect to you when you wear these lenses. Read on further to learn why there really is a difference in the sunglasses that you can get and why you need to be informed to make the right decisions about your eye and vision care.
When we simmer it down, there are four characteristics that a high quality pair of sunglasses should provide for you. First, sunglasses can offer a safeguard against ultraviolet rays of the sun. Ultraviolet (UV) light can damage the cornea as well as the retina. Good quality sunglasses can filter out the UV rays and provide valuable eye protection. That is why many baseball players always use polarized sunglasses
Next, sunglasses can offer a defense from intense, powerful sunlight. When the eye receives too much light it naturally reacts by closing the iris to limit the amount of light hitting the retina. Once the iris has been restricted it only leaves squinting as a means to further control the onslaught of strong sunlight. When there remains powerful ambient light as occurs on a clear, cloudless day, the result can be harm to the eye. A good quality pair of sunglasses can block the incoming light by as much as 97% thus protecting our vision.
Sunglasses offer protection from glare. Certain relatively flat surfaces, such as snow or standing water or even roadways, can be the cause of reflected light. The reflected glare can cause bright spots in your vision ranging from merely disturbing and annoying to outright dangerous by concealing objects in your field of view. Polarized sunglasses can virtually eliminate this type of glare.
And lastly, sunglasses are effective in removing particular frequencies of light from striking our eyes. In some circumstances, certain frequencies of the visible and invisible light spectrum could blur your vision or even affect contrast. Choosing the right color for your sunglass lenses can go a long way to counteract these negative aspects of light optics. If you are looking to purchase a pair of cheap sunglasses you are reminded that you usually give up all of the advantages listed above and you could be doing damage to your eyesight. For example, if your sunglasses provide no UV protection and are just colored lens, you increase your exposure to UV rays. Cheap sunglasses work to limit some of the light reaching your eye causing your iris to open wider to let in more light. This, in turn, allows more UV light to reach your retina ultimately increasing the potential for damage to your eyesight.
Choose wisely and protect your eyes. Buying the right pair of high quality sunglasses will give you years of unsurpassed eye protection and vision performance enhancement.