Advantages of Polarized Sunglasses
Sunglasses are a form of protective eyewear that protects your eyes against bright light and light of intensities that might harm you and affect your vision. These glasses are specially designed to reflect back or block some amount of the light energy incident on your eyes so that it does not harm your eyes in any way. These glasses have special lenses that are of mainly three types, coloured, polarized or darkened.
Polarized glasses have been popular among fishermen and boaters who need to avoid the glare from the sea water, as the sea water reflects light and polarizes it, creating a light ray of intensity that may harm the eye.
So, how do these polarized lenses counter this light and protect our eyes? Well, that's an interesting question as there is a whole new science involved in it involving the principles of optics which let us an insight into the whole mechanism of the working of the polarized. As we know that light from different sources is usually scattered in all directions, however, when this light is reflected from flat or smooth surfaces like the hood of a car or the road's surface, the reflected light is aligned in one direction and the intensity of the light so high in that direction that it can harm your vision and even cause permanent damage. To counter this, polarized lenses are used. These lenses act as a filter for light as it filters out the light of high intensity and lets only some intensity of light to pass through which is acceptable to your eyes. These polarized glasses also filter out the harmful UV rays from the sun which might damage your retina.
Besides boaters, outdoor enthusiasts who benefit the most from polarized sunglasses include skiers, bikers, golfers and joggers, all who may enjoy a clearer view along with elimination of glare. The polarized bifocal sunglasses or progressive lenses are examples of options for the presbyope who also likes outdoor sports.
Polarized glasses can also be worn by people whose eyes are sensitive to light and are also advisable to people post-cataract surgery and other eye treatments so that no harmful radiation or high intensity light may cause detrimental effect to the eye during the period of its treatment.
These days polarized photo chromic lenses, which change from dark outside to light inside, are also available in the market. These are right for the light-sensitive person who frequently is in and out of the sun on any given day.
Polarized glasses have been popular among fishermen and boaters who need to avoid the glare from the sea water, as the sea water reflects light and polarizes it, creating a light ray of intensity that may harm the eye.
So, how do these polarized lenses counter this light and protect our eyes? Well, that's an interesting question as there is a whole new science involved in it involving the principles of optics which let us an insight into the whole mechanism of the working of the polarized. As we know that light from different sources is usually scattered in all directions, however, when this light is reflected from flat or smooth surfaces like the hood of a car or the road's surface, the reflected light is aligned in one direction and the intensity of the light so high in that direction that it can harm your vision and even cause permanent damage. To counter this, polarized lenses are used. These lenses act as a filter for light as it filters out the light of high intensity and lets only some intensity of light to pass through which is acceptable to your eyes. These polarized glasses also filter out the harmful UV rays from the sun which might damage your retina.
Besides boaters, outdoor enthusiasts who benefit the most from polarized sunglasses include skiers, bikers, golfers and joggers, all who may enjoy a clearer view along with elimination of glare. The polarized bifocal sunglasses or progressive lenses are examples of options for the presbyope who also likes outdoor sports.
Polarized glasses can also be worn by people whose eyes are sensitive to light and are also advisable to people post-cataract surgery and other eye treatments so that no harmful radiation or high intensity light may cause detrimental effect to the eye during the period of its treatment.
These days polarized photo chromic lenses, which change from dark outside to light inside, are also available in the market. These are right for the light-sensitive person who frequently is in and out of the sun on any given day.
Source...