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Diabetes - How is laser used to treat diabetic macular edema?

If you would like to consult with our Eye Physicians & Surgeons at Eye Associates of Southern California, then please contact us.

Laser photocoagulation uses the heat from a laser to seal or destroy abnormal, leaking blood vessels in the retina.

  • Focal photocoagulation. Focal treatment is used to seal specific leaking blood vessels in a small area of the retina, usually near the macula. The ophthalmologist identifies individual blood vessels for treatment and makes a limited number of laser burns to seal them off.

Laser photocoagulation is not usually painful. The injection of anesthetic may be uncomfortable. And then you may feel a slight stinging sensation or see brief flashes of light when the laser is applied to your eye.

Laser photocoagulation is usually performed as an outpatient procedure using a local or topical anesthetic that affects only the eye. You do not have to stay overnight in a hospital.


You will need someone to drive you home from the doctor's office or clinic after the procedure. Eyedrops are used to widen (dilate) your pupils before the procedure, and your eyes will remain dilated for several hours afterward. Wear sunglasses to keep bright light out of your eyes while they are still dilated.

Your vision may be blurry and your eye may hurt a little for a day or two after the treatment.

Be sure to keep all follow-up appointments with your doctor and report any changes in vision that you experience. Follow-up treatment can make a big difference in maintaining your vision for the long term.


Laser treatment may not restore vision that has already been lost. But when performed in a timely manner:Focal photocoagulation, which targets specific blood vessels, is effective in reducing the risk of vision loss in people with macular edema.  It lowers the risk of moderate vision loss by 20% in people who have mild to moderate nonproliferative diabetic retinopathy


Laser photocoagulation burns and destroys part of the retina and often results in some permanent vision loss. This is usually unavoidable. Treatment may cause mild loss of central vision, reduced night vision, and decreased ability to focus. Some people may lose some of their side (peripheral) vision. But the vision loss caused by laser treatment is mild compared with the vision loss that may be caused by untreated retinopathy

Rare complications of laser photocoagulation may cause severe vision loss. These include:

  • Bleeding in the eye (vitreous hemorrhage).
  • Tractional Retinal Detachment
  • Accidental laser burn of the fovea (a depression in the central macula that contains no blood vessels), resulting in severe central vision loss.


The biggest drawback to laser photocoagulation is that the laser damages some of the light-sensitive nerve cells in the retina and macula. This often results in some vision loss.

But the immediate vision loss caused by laser treatment must be measured against the more severe vision loss that could result from untreated retinopathy. For people with diabetic retinopathy, laser photocoagulation is very likely to help prevent more severe vision loss over time.

Diabetes experts agree that early detection and treatment of retinopathy can prevent many, or even most, cases of severe vision loss and blindness in people with diabetes.

It is also important to keep your blood sugar levels low after laser treatment. Even if your eyes are better, diabetic retinopathy will keep getting worse over time if your blood sugar levels rise again.

  

Make an appointment online or call us (at 951-303-6111) for your personal consultation with our Eye Physicians, Surgeons, and Doctors at Eye Associates of Southern California. New patient forms.

         

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