Just as vitreous pulling creates small retinal tears, it can also
cause very large retinal tears. If the retinal tear is very
large (one quarter of the retina or more), it is called a "giant
retinal tear". Occasionally, the tear is so large that the retina
folds over on itself, like a piece of paper folded in half. A
giant retinal tear is a very serious problem.
Vitreous surgery, scleral buckling and laser treatment may be
used to treat giant retinal tears. The lens of the eye is usually
removed to make this surgery successful. The goal of the surgery
is to unfold the retina, put it back in place, and seal it into
its proper position. Silicone oil or fluids that are heavier
than water (called perfluorocarbons) may be used to unfold a giant
retinal tear and reattach the retina.
Many patients will see well after surgery for a giant retinal
tear, but some will not. Most will recover enough vision to get
around. Despite modern techniques to reposition the folded retina
and hold it into place, many eyes develop scar tissue
(proliferative vitreoretinopathy) after the surgery and the
retina again becomes detached. Your surgeon will discuss with
your chances for regaining some vision with this surgery, as well
as the possible complications.
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