The majority of what we experience in life comes to us
through our sense of sight. In fact of our all five sense
organs, eyes are the most important and as we only have
a pair of eyes to last our life time it is extremely important
to take good care of them.
Eye fatigue and headaches can often be prevented with
proper visual correction.When the eye presents no visual
defects, image focuses clearly on the retina. However when
they do not focus on the retina, vision is blurred.
Thus there are various visual defects like:
Myopia:You do not see distant objects clearly.
Hyperopia: It’s difficult to focus on near objects.
In the first case eye may be longer than normal eye
and image is formed in front of the retina and reserved
in the latter.
Astimatism: The corneal curvature is uneven.
Presbyopia:Virtually everyone is affected after the
age 40. With our evolving lifestyles this gap is reducing
further with greater and greater dependence on computer
and lack of good nutrition. You begin to have difficulty
in viewing near objects as the crystalline lens loses its
Visual defects in children are generally detected
quite late because they may shy away from spectacles
and also they may be unable to comprehend the problem.
Schools must understand that they need to have rotation
basis of seating for children, because if children keep
sitting in front seats visual defects may go unknown
for long periods.