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Wearing sunglasses under direct sunlight: Large lenses offer good protection, but broad temple arms are also needed against "stray light" from the sides.
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Eyes are very precious and the ultraviolet radiations of sunlight may damage them. Thus it is necessary to use good quality sunglasses to protect the eyes from the harmful effects of sunlight.
As compared to winters, the
ultraviolet rays become three times more intense in summer. The flow of water
from the eyes, giddiness, nausea and the irritation of the eyes occur due to
these radiations.
There are several benefits of the
use of sunglasses.
1.
Retina
The sunglasses protect the eyes from
the damage caused to retina by the ultraviolet rays of sunlight and the dust
particles.
2.
Cornea
The ultraviolet rays break or damage
the layer of tears cells present on the surface of the eyes. This situation is
very dangerous to the cornea. These rays equally damage the retina and cornea. But
the sunglasses protect the eyes from such damages.
3.
Basal Cell Carcinoma
The problem of basal cell carcinoma
occurs in the absence of sunglasses. It is the common form of skin cancer. It
occurs when the eyes come in touch with sunlight. This problem of skin cancer appears
on the eyelids.
4.
The outer layer of the upper and
lower eyelids is called conjunctiva. It is the sensitive part of the eyes. The problem
of itching occurs on these layers due to sunlight. The viral, bacterial and
allergic infection in conjunctiva is called conjunctivitis. So wear the the
sunglasses that could cover the eyelids.
5.
Cataract
The problem of cataract is very common which
afflicts the aged people. But cataract also occurs due to ultraviolet rays. In
such condition the eye lens becomes hazy and the problem of visibility appears.
The risks of cortical cataract becomes double on remaining exposed in sunlight
for longer durations. Therefore the sunglasses giving protection from the
ultraviolet rays should be used.
6.
Precautions
Take care of the following things before
purchasing sunglasses.
Remember that the sunglasses are not
the objects of fashion or ornamentation.
They are meant to protect the eyes.
The sunglasses save from sunlight, dust,
smoke and germs.
The use of low quality sunglasses
for longer durations may severely damage the eyes.
The size of the sunglasses should be
large.
The quality of the sunglasses should
be higher.
They should give protection from
the ultraviolet rays.
Use the sunglasses until scratches
appear or the lens becomes hazy.
Take dark colored glasses as the
light shades can not give protection against the ultraviolet radiations.
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