Signs and symptoms of retinal detachment
What causes retinal detachments?
On rare occasions, retinal detachment may occur after LASIK surgery in highly nearsighted individuals. In a study of more than 1,500 LASIK patients, just four suffered retinal detachment; their pre-LASIK prescriptions ranged from -8.00 D to -27.50 D.
Treatment for retinal tears and detachments
Surgery is the only effective treatment for a torn or detached retina. The procedure or combination of procedures your doctor uses depends on the severity and location of the problem.
Laser surgery. Also called photocoagulation, laser surgery is generally used for retinal breaks and tears that have not yet become retinal detachments. The surgeon directs a laser beam into your eye through the pupil to “spot weld” the damaged retina to its underlying tissue. Photocoagulation requires no surgical incision and causes less irritation to the eye than other treatments.
Cryopexy. In this treatment, the surgeon applies a freezing probe to the outer surface of the eye over the area of defective retina. The scarring that occurs from the freezing reattaches the retina to its support tissue.
Pneumatic retinopexy. This surgery is generally used to treat a retinal detachment in the upper half of the retina. The surgeon injects an expandable gas bubble inside the eye, positioning the bubble over the torn and detached retina. As the gas bubble expands, it pushes the detached retina against its support tissue. The surgeon then may use laser photocoagulation or cryopexy to firmly reattach the retina to the underlying tissue. Over time, your body absorbs the gas bubble. Until that occurs, certain precautions are necessary.
In a variation of pneumatic retinopexy, the surgeon may inject silicone oil rather than expandable gas into the eye to press the detached retina against its support tissue. In this procedure, the silicone oil must be removed from the eye after the retina is reattached.
Scleral buckling. This is the most common surgery used to treat a retinal detachment. In this procedure, the surgeon places a soft silicone band around the eye, which indents the outside of the eye toward the detached retina. The band is sutured against the tough outer white coating of the eye (the sclera). The surgeon then drains any fluid between the retina and its support tissue, and reattaches the retina with laser photocoagulation or cryopexy.
In about 90% of cases, detached retinas are successfully reattached with a single surgery. However, this does not mean your vision will return to normal. Patients who have the best visual outcomes from retinal detachment surgery are those who seek attention immediately upon noticing symptoms and have detachments that do not involve the central retina (the macula).
For more information on retinal detachment, visit All About Vision®.