Do you find yourself squinting due to the brightness of the sun?

Our eyes are one of, if not the most, vulnerable organs we have. We use it everyday but rarely remember to protect it.

The ultraviolet radiation, or UV, from the sun damages not only the skin but also the eyes. Exposure to UV rays does not only causes sunburn of our skin, it also causes sunburn of the cornea, or what is called photokeratitis, which lasts for two days at most. Long-term exposure to UV causes cataracts and other eye problems.

The sun's glare is another problem. It affects our vision, causing light reflections from surfaces like water and even from hood of cars. Glare impedes our vision. Glare causes eyestrain, headaches or migraines.

As sunscreen is necessary for the protection of the skin, so are sunglasses to the eyes. But not just any sunglasses. Ever heard of polarized sunglasses?

Like any other sunglasses, polarized sunglasses block UV rays and fight off glare, but more effectively than any other sunglasses. Polarized glasses can eliminates the sun's glare when it bounces off of reflective surfaces.

Polarized sunglasses absorb the sun's glare, which is reflected from flat surfaces. Writer Steve Wolfson states that polarized sunglasses absorb up to 97% of the glare. Trevor Kugler informs that while regular sunglasses minimize the intensity of light that enters the lenses, polarized sunglasses eliminate selective parts of the reflected light, reducing brightness. For example, polarized sun glasses can selectively eliminate the reflection of sunlight from the water's surface. Eye fatigue is lessened because less harmful light is reaching the eyes. This type of glasses are ideal for outdoor sports and even for those who have eye disorders of long-distance vision.

Trevor Mulholland advises that it is effective to use polarized sunglasses rather than ordinary sunglasses. He explains that wearing polarized lenses blocks glare while letting some light come through so you can see clearly in bright light without squinting. According to him, other sunglasses do have dark lenses as well, but they have to go through a process where they are given a special coating so they will be able to filter unwanted light. Using polarized glasses will allow you to see images clearly, with colors that are true and natural.

Polarized sunglasses have few disadvantages. According to Jennifer Bailey, wearing polarized sunglasses makes it difficult to read displays from liquid crystal display or LCD, especially those found in places like automated bank machines. She states that specific angles and images from LCD monitors may not be viewed using polarized glasses. Max Bellamy states that having polarized sunglasses may keep you from detecting relief features on snow, as it stops the light rays reflecting from it.

Polarized sunglasses, you may opt for lenses with anti reflective and hydro repellant coatings. They may have a pouch or cleaning cloth, an unbreakable and lightweight frame. They may have temples constructed with air channels that let them float if you lose the glasses in water. The glasses may have a rimless design that provides an unobstructed view of the world. Lens can also be changed, from dark to light, depending on changing conditions. If the sky is bright, you use the dark lenses. During cloudy days when you need more light to see clearly, you use light colored glasses.

How do you find polarized sunglasses at a low price online? Mike Herman suggests that you thoroughly check the background information of an online source. Check if somebody has made a complaint against the seller or their products. Look out for potential rip offs or scams. Watch out for sites that dramatically reduce prices on items to move excess merchandise. They mostly have great offers. So snap them up as you see them advertised. Some items are in high demand and in low stock. If you find one and you like it, purchase it.