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Monovision with Lasik Surgery
Monovision is one clinical technique used to deal with the correction
of presbyopia, the gradual loss of the ability of the eye to change
focus for close-up tasks that progresses with age. The intent of
monovision is for the presbyopic patient to use one eye for distance
viewing and one eye for near viewing. This practice was first applied
to fit contact lens wearers and more recently to LASIK and other
refractive surgeries. With contact lenses, a presbyopic patient
has one eye fit with a contact lens to correct distance vision,
and the other eye fit with a contact lens to correct near vision.
In the same way, with LASIK, a presbyopic patient has one eye operated
on to correct the distance vision, and the other operated on to
correct the near vision. In other words, the goal of the surgery
is for one eye to have vision worse than 20/20, the commonly referred
to goal for LASIK surgical correction of distance vision. Since
one eye is corrected for distance viewing and the other eye is corrected
for near viewing, the two eyes no longer work together. This results
in poorer quality vision and a decrease in depth perception. These
effects of monovision are most noticeable in low lighting conditions
and when performing tasks requiring very sharp vision. Therefore,
you may need to wear glasses or contact lenses to fully correct
both eyes for distance or near when performing visually demanding
tasks, such as driving at night, operating dangerous equipment,
or performing occupational tasks requiring very sharp close vision
(e.g., reading small print for long periods of time).
Many patients cannot get used to having one eye blurred at all
times. Therefore, if you are considering monovision with LASIK,
make sure you go through a trial period with contact lenses to see
if you can tolerate monovision, before having the surgery performed
on your eyes. Find out if you pass your state's driver's license
requirements with monovision.
In addition, you should consider how much your presbyopia is expected
to increase in the future. Ask your doctor when you should expect
the results of your monovision surgery to no longer be enough for
you to see near-by objects clearly without the aid of glasses or
contacts, or when a second surgery might be required to further
correct your near vision.
Additional Lasik Surgery Research:
Lasik Candidates |
Lasik Risks | Choosing
a Lasik Surgeon | Monovision
with Lasik | Bilateral
Simultaneous Lasik Treatment | Lasik
Surgery Before & After | Lasik
Surgery Prices & Costs | Lasik
Glossary
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