Patient Questions
about Macula Surgery;
Page 2
How
long does the macula surgery take?
The entire
operation, including vitrectomy to reach the back of the eye,
typically requires 30 minutes to one hour. The critical portion
of the operation at the macula currently takes 10-15 minutes on
average.
How often do macular traction conditions require surgery? What
happens if it goes untreated?
An estimated
2.25 million people in the United States alone have some detectable
scarring on the macular surface. Between 25,000 and 40,000 people
annually undergo an operation to treat macular pucker or macular
hole associated with surface traction.
Macular
pucker can be gradually or rapidly progressive. At its worst,
the eye becomes legally blind so that the affected eye cannot
read, recognize faces, or allow safe driving. Both eyes are affected
in 30% of cases. As a rule of thumb, approximately half
of lost vision is reversible with surgery. For example, if the
patient loses eight lines of visual acuity on the eye chart, four
lines of visual loss remain after using the current surgical technique.
Macular
holes almost always result in permanent legal blindness to the
affected eye unless treated.
What
are the short and long term consequences of removing EMP and the
ILM?
EMP has been removed
for over 20 years with no undesirable consequences, so long as mechanical
or light damage to the retina during surgery does not occur.
During the 1980's, Morris,
Kuhn and Witherspoon studied a group of patients with a rare disease
called Terson's syndrome, in which hemorrhage and associated blood
pressure lifted the ILM off of the macula. After they removed the
spontaneously elevated tissue from the eye using forceps, these
eyes functioned well with stable, excellent vision during long-term
follow-up (Morris, RE, Witherspoon, CD, Kuhn F., Hemorrhagic Macular
Cysts. Ophthalmology, 1994; 101:1).
Forceps removal of the
ILM for macular hole surgery has been performed on thousands of
eyes by many surgeons since 1994.
|
Medical
information provided in this site is intended to assist you in understanding
a complex ocular condition. It can not replace the judgment and skill of your
personal doctor. |
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