Refractive error like Hypermetropia (long sight) may lead to inward deviation
of the eye
(Convergent squint) and Myopia (short sight) may
lead outward deviation of eye
(Divergent squint). Therefore
it is important in all the cases of squint, especially in children,
to have a thorough eye checkup to rule out any other cause of loss
of vision. Convergent squint can be corrected by giving plus lenses.
Divergent squint can be corrected by giving minus glasses.
When the eyes are not aligned properly, each of the eyes is focusing
on a different object and sends signal to the brain. These two different
images reaching the brain led to confusion and may have either of
the two effects:
A child would ignore the image coming from the deviated eye, and thus sees
only one image. But in the process, he loses the depth perception.
This suppression of the image from the deviating eye results in
poor development of vision in this eye, which is known as "amblyopia".
It is important to treat the amblyopia before the surgery for squint.
Occluding the good eye for prescribed number of hours/day treats
it.
Vertical
Squint: Can be paralytic
or nonparalytic. They are usually difficult to treat. Surgery may
correct it or glasses with prism may have to be prescribed. Usually
squint correction surgery is performed around the age of 5-6 years
of age.
| Before Surgery |
After Surgery |
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Last updated on 14-05-2001
