What is PPR Argon Laser Treatment?
PPR (Pan-Retinal Photocoagulation) Argon laser treatment is a recognized ophthalmic procedure used to treat certain retinal conditions. A focused laser beam is applied to specific areas of the retina to stabilize abnormal changes and prevent further deterioration.
In conditions like diabetic retinopathy, damaged or abnormally growing blood vessels can develop, which may leak or bleed, potentially leading to severe vision loss or blindness. The Argon laser “seals” or “destroys” these pathological vessels, preventing further damage.
Who is the treatment for?
PPR Argon laser treatment is primarily recommended for:
- Proliferative or advanced diabetic retinopathy, where new blood vessels (neovascularization) have formed.
- Other retinal vascular conditions, such as certain vein occlusions or retinal lesions, where preventing bleeding or further damage is necessary.
It is important to note that this treatment is intended to prevent further deterioration — it usually does not immediately improve vision. The main goal is stabilization, preserving vision, and preventing blindness.
How is the treatment performed?
- The procedure is usually outpatient, meaning no hospital stay is required.
- Pupils are dilated with eye drops before the treatment.
- During the procedure, you may see flashes of light; this is normal. The procedure is generally painless thanks to anesthetic eye drops.
- After the treatment, vision may be temporarily blurred; it is recommended not to drive and to have someone accompany you.
- Multiple sessions may be needed to adequately treat the retina, depending on the severity of the condition.
Why is this treatment important?
PPR Argon laser treatment has been the standard of care for proliferative retinal conditions like diabetic retinopathy for decades. Research shows that it significantly reduces the risk of severe vision loss or blindness in patients with high-risk retinal conditions.
By destroying damaged and abnormal blood vessels, oxygen supply to the retina is improved, and the formation of new, harmful vessels is reduced. This helps protect the most critical part of the retina — the macula — while keeping the rest of the retina stable.
Possible side effects or limitations
Because conditions like diabetes are often chronic, continued monitoring may be necessary — sometimes repeat laser treatments or additional treatments are required.
The treatment is not intended to restore lost sharp vision; it is intended to prevent further deterioration.
Sometimes temporary loss of visual field, or a reduction in night vision or color vision, may occur.