Sunglasses are essential to protect vision on sunny days avoiding the development of eye diseases, giving greater visual comfort. Even babies and children should wear sunglasses when outdoors, however they must be of quality.
UVA rays are the ones that most affect the earth's surface and so are essential in good sunglasses. However, the most suitable sunglasses to protect the health of the eyes is the one that has the 4 filters: UVA, UVB, UVC and polarized.
The 7 benefits of using polarized sunglasses for health are:
Although indicated for use in all situations, it is especially suitable for use on the beach, for driving and water sports or in snow, where the sun is strong, causing greater discomfort in the eyes.
Good quality sunglasses cost more, but contain special filters that prevent the passage of the sun's rays, protecting and guaranteeing the health of the eyes. See the following table for the importance of these 4 filters in sunglasses:
|Protects structures||They help to avoid diseases|
|UVB||Cornea and |
|Inflammation and opacity of |
|UVC||Cornea||Inflammation and opacity of |
|Polarized||All eyes||Macular degeneration, cataract|
There are several models on the market for all types of face. Some can even be custom-made to the degree that the individual needs, and can replace the use of ordinary grade sunglasses on sunny days.
Cheaper sunglasses do not protect the eyes from the sun because they do not have the necessary filters and can cause eye diseases because the darker the lens, the greater the dilation of the pupil and consequently the greater the exposure to harmful sunrays. However, the vast majority of brands sold in Brazil have good filters, with the exception of sunglasses pirated and sold on camelô, for example.
To ensure total sun protection, in addition to the use of sunscreen for body and face, it is also recommended the daily use of a good sunglasses, with filters UVA, UVB and UVC or a sunglasses with a lens polarized. Another option is to take a drink that is actually a sunscreen, which protects the skin and eyes. Learn more here.