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| EYE CARE |
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The significance of
Vision and Eye care lies behind the fact that, of the total impressions through various
senses received by the brain, 75% is through sight. Therefore, extra care and attention to
this sense which is vital in our every day activities becomes important. Proper eye care
hinges on two things:
- Basic knowledge about the eye and its
function.
- Regular check ups by a qualified Optometrist
/ Ophthalmologist and prompt consultation at the first sign of trouble.
The human eye works very much like a camera, but is much
quicker to respond to light. It is connected to the brain by the OPTIC NERVE.
When the eye views an object, the light reflected from the object passes through the
curved, transparent surface in the front called CORNEA. It then travels
through a body of fluid known as the AQUEOUS HUMOUR to reach the LENS
that converges the rays to pass through a gel called VITREOUS after which
an inverted image is formed on the RETINA (a screen at the back of the
eye).
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This is carried by the OPTIC NERVE
to the BRAIN where the image is made 3 Dimensional and erect. |
Directly in front of the lens is the IRIS,
which is responsible for the colour of the front of eyeball. In the center of this is the PUPIL,
a hole which allows light to enter the eye. In bright light, it becomes small, allowing
less light to enter the eye and in dim illumination it becomes larger to allow more light
to enter the eyeball.
The ability of the eye to focus on close and distant objects is called ACCOMMODATION.
This is a function of the CILIARY MUSCLE that holds the lens in place.
Now that you have been briefly introduced to the eyeball
and its important structures, we now move on to the problems. Here are a few tips for eye and vision care, which when practised
may help you to help maintain your eye health.
- While reading, never lie flat on your back.
- As far as possible, try to maintain a
reading distance not less than 25 cms from the eye.
- Take adequate intervals of rest (say 5 -10
mins) in between reading. One can also relax the eyes by looking at a distant object 5
meters away.
- Do not take sharp objects close to the eyes
as they may cause an irreversible damage to your eyes.
- While handling chemicals, be careful not to
take them close to your eyes. Use of protective goggles is recommended.
- When exposed to ultra violet rays in the
working place, use safety glasses to avoid its harmful effect.
- Never read in dim illumination as this may
lead to eye strain.
- Never read while in motion (as on a moving
train or bus).
- Always follow the instructions of your
optometrist in using glasses or contract lenses.
- Try to maintain a distance of 6 feet from
the TV monitor.
- While working with reflecting surfaces like
computer terminals, use anti-reflection coated glasses to avoid glare and eye strain.
- Two wheeler riders must wear protective
sun-glasses to avoid dirt and dust particles from entering the eyes.
- Get your eyes checked once a year by your
Optometrist / Ophthalmologist even in the absence of an eye problem.
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