Do sunglasses protect eyes? Points to note
Posted on: 02/Aug/2016 9:39:45 AM
Generally, people resort to wearing sunglasses to escape from the fury of the scorching sun in the summer season. Many people have started wearing cooling glasses as a style statement.
Sunglasses are available in the widest price range starting from Rs. 40/- to over Rs. 40000/-.
This brings up the question whether wearing sunglasses is really good for the eyes.
Sunglasses are used mainly to protect the eyes from the ultraviolet radiation from the sun. There are 3 types of ultra-violet rays – UVA, UVB, and UVC. Out of these, only UVA and UVB are capable of reaching the earth to cause harm. If the intensity of ultra-violet rays is high, they may affect the retina of the eye. It may cause of the growth of tissues in the upper part of the eye. It may also be instrumental in the attack of cataract in the eyes.
Exposure to ultra-violet rays is the main reason for people working in the construction and agricultural industries to be affected by cataract in the course of time.
Sunglasses are worn mainly to prevent the above attacks and to prevent dust or insects entering the eyes, The term ‘UVR400’ would be printed in the sunglass.
The meaning of this nomenclature is that the sunglass will protect from ultraviolet rays at a distance of 400 metres.’UV Protection Layer’ in the sunglass would be properly done only in good quality makes.Low-priced sunglasses may not have this. Only UV 400 will be printed – this would be of no use.
People wearing low-priced sunglasses are likely to be affected by swelling in the eyes, irritation, and water release from the eyes. As the low-priced sunglasses are made from low-quality metal, low-quality plastic, and fake dyes/paints, there are chances of suffering from ‘Dermatitis’ by wearing them. The skin surrounding the eyes may even turn red. Some persons get black rings around the eye.
It is always proper to use sunglasses manufactured by well-known brands with a guarantee. It is not wise to use sunglasses just as a style statement. It is better not to harm our eyes by wearing these low-quality sunglasses.
