Lasik surgery can, very rarely, cause permanent problems. Although
Lasik outcomes are tremendously favourable, there is still a
fraction of less than 1% of people who experience serious and
ongoing vision problems due to Lasik. It is an absolute truth that
no surgical procedure if ever risk-free.
Problems due to infection:
Infections due to Lasik problems can also lead to of redness, oozing
off eyes and sometimes pain.
Problems due to growing age:
There has been an increase in the number of older patients who
demand for Lasik surgery. Since these patients represent special
challenges, they are continuously exposed to lasik problems.
Increased age has been previously associated with poorer final
clarity of vision, as measured on an eye chart. The case histories
of around 700 consecutive laser eye surgeries, performed to correct
nearsightedness, farsightedness and astigmatism, reveal that there
was 20/40 chances of visual acuteness for 91 to 100% of patients.
Another Lasik problem for older patients is difficulty with nearer
vision after the surgery due to the loss of ability to hold. This
usually happens due to the loss of elasticity of the lens of the
eye, making it impossible to maintain a clear image as the objects
are moved closer.
Problems of unbalanced vision:
A very small fraction of young patients are also exposed to Lasik
problems. People with excellent vision, based on eye chart testing,
can still have troublesome side-effects after the surgery. For
instance, it is rare but possible that a patient may see 20/20 or
better with uncorrected vision while at the same time have symptoms
such as double vision, unresolved dry eye, or difficulty seeing at
night because of glare or halos around lights. This probably happens
due to higher order aberrations. As a result, the surgery becomes
expensive since it becomes important to get custom Lasik done.
Problems due to irregular flap replacement:
When lasik problems occur, they may be associated with the creation
of a hinged flap in the clear front cornea, which is lifted for
laser reshaping of the eye. The flap is then replaced to form a type
of natural bandage. If this flap is not made or replaced correctly,
they may fail to hold correctly to the eye’s surface. The flap is
sometimes cut too thinly or thickly which might begin to wrinkle
after the flap is placed back on the cornea. These types of Lasik
problems can lead to an irregular shaped eye surface, which in turn
may require a re-treatment of the eye to resolve the problem.
Problems like Diffuse lamellar Keratitis can occur with the
emergence of cellular debris that can create inflammation underneath
the Lasik flap. The cornea then reacts to the presence of foreign
matter, thus causing inflammation leading to scarring in rare cases.
The fear of permanent vision loss cannot be denied, without prompt
treatment. .
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