Another type of surgery that can be done for retinal detachment
is called pneumatic retinopexy. Pneumatic retinopexy is
performed on an outpatient basis. Local anesthesia, rather than
general anesthesia, is used.
Cryotherapy or laser treatment is performed to seal the retinal
tear. Instead of placing a scleral buckle on the outside of the
eye, the surgeon, using a needle, injects a gas bubble inside the
vitreous cavity of the eye. The patient is instructed to keep
his head in a specific position so that the gas bubble pushes the
detached retina against the back wall of the eye to seal the
retinal tear. The patient is asked to remain in this position
for various periods of time until the retinal tear is sealed
against the back wall of the eye. Your surgeon will tell you how
long special positioning is necessary. Antibiotic eye drops may
be used during the days following the procedure.
The gas bubble in the vitreous cavity of the eye expands for
several days and takes two to six weeks to disappear. During
this time, airplane travel or travel to a high altitude must be
avoided becauses high altitudes can result in an expansion of gas
and an increase in pressure that can damage the eye. Your
surgeon will tell you when it is safe to travel. It is also
important for a patient with a gas bubble not to lie face up, as
the air bubble may come to rest against the lens of the eye and
cause a cataract or high pressure in the eye.
The chance of successfully reattaching the retina with pneumatic
retinopexy is less than with the scleral buckling surgery. Also,
pneumatic retinpexy cannot be used, or is not effective, for
every retinal detachment. Your surgeon will discuss with you
whether pneumatic retinopexy is feasible and the chances for
successfully reattaching your retina. With pneumatic retinopexy,
hospitalization, general anesthesia, and the cutting done for the
scleral buckling surgery are all avoided. Complications of
pneumatic retinopexy include cataract formation, glaucoma, gas
getting under the retina, excessive scar tissue formation,
glaucoma, and infection. Any one of these complications can
lead to a total loss of vision, but each is rare. The most
common complication is recurrence of the retinal detachment. If
the retina becomes detached again, scleral buckling surgery or
vitrectomy can usually be performed to reattach it.
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