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Macular
holes are most common in women. They can also affect both
eyes. Fortunately, macular holes can be repaired. Ten years ago,
this was not possible. Today, with careful microsurgical techniques,
macular holes are repaired routinely with excellent improvement
in vision.
The
macula is the part of the retina responsible for acute central vision,
the vision one uses for reading, watching television, and recognizing
faces. A macular hole is a small round opening in the macula. The
hole causes a blind spot or blurred area directly in the center
of your vision.
Most
macular holes occur in the elderly. When the vitreous (the gel-like
substance inside the eye) ages and shrinks, it can pull on the thin
tissue of the macula, causing a tear that can eventually form a
small hole. Sometimes injury or long-term swelling can cause a macular
hole. No specific medical problem is known to cause macular holes.
Vitrectomy
surgery, the only treatment for a macular hole, removes the vitreous
gel and scar tissue pulling on the macula and keeping the hole open.
The eye is then filled with a special air bubble to push against
the macula and close the hole. The air bubble will gradually dissolve,
but the patient must maintain a face down position for one to two
weeks to keep the gas bubble in contact with the macula. Success
of the surgery often depends on how well the position is maintained.
With
treatment, most macular holes shrink and some of the lost central
vision slowly returns. The amount of visual improvement typically
depends on the length of time the hole was present. Some people
with normal vision in the other eye may not want surgery, since
vitrectomy surgery cannot completely restore vision.
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