Retinal Laser Treatment
Who May Benefit from Retinal Laser Treatment
People with diabetic retinopathy often benefit from laser treatment, especially when abnormal blood vessels begin growing on the retina. Approximately 33 percent of people with diabetes over age 40 have some form of diabetic retinopathy, and among those, roughly 7 percent have proliferative diabetic retinopathy (Centers for Disease Control and Prevention). These fragile new vessels can bleed into the eye and cause severe vision loss. Laser treatment reduces the risk of this complication by stopping the growth of these vessels.
A retinal tear occurs when the thin tissue at the back of your eye develops a rip. Without treatment, fluid can seep through the tear and cause the retina to detach from its supporting layer. Laser treatment creates a seal around the tear to prevent this from happening.
Swelling in the macula, the central part of the retina responsible for sharp vision, can develop in people with diabetes. Laser treatment can reduce this swelling by sealing leaking blood vessels and helping the retina absorb excess fluid. Learn more about diabetic macular edema and its treatment options.
When a vein in the retina becomes blocked, it can cause swelling and abnormal blood vessel growth. Laser treatment helps manage these complications by reducing swelling and preventing new vessels from forming. You can read more about retinal vein occlusion management for additional details.
This condition causes fluid to build up under the retina, often affecting middle-aged adults. When the fluid does not resolve on its own, laser treatment can help seal the leak and restore normal retinal anatomy. For a deeper look at this condition, see our page on central serous retinopathy.
Types of Retinal Laser Treatment
This treatment covers a wide area of the peripheral retina with hundreds to thousands of small laser spots. It is the primary treatment for proliferative diabetic retinopathy, where abnormal blood vessels grow on the retina surface. The 2024 NICE guidelines confirm that panretinal photocoagulation remains the first line treatment for proliferative diabetic retinopathy. By treating the outer retina, the laser reduces the drive for abnormal vessel growth and lowers the risk of severe bleeding.
Focal laser targets specific areas where blood vessels are leaking in the macula. The laser creates small spots that seal these leaking points and reduce swelling. This precise approach helps preserve central vision while treating only the affected areas.
Grid laser places a pattern of small spots over a broader area of the macula to treat widespread swelling. This technique helps the retina absorb excess fluid more effectively. It is often used when leakage is not limited to a few specific points.
Micropulse laser delivers energy in very short bursts rather than continuous exposure. This reduces heat buildup and minimizes damage to healthy tissue. It is commonly used for macular edema and central serous chorioretinopathy when a gentler approach is preferred.
When treating retinal tears, the laser creates a ring of small scars around the tear. These scars form a strong bond between the retina and the underlying tissue. This barrier prevents fluid from getting beneath the retina and causing a retinal detachment.
This treatment combines a light-activated medication with a low-energy laser. The medication is injected into a vein and collects in abnormal blood vessels. When the laser activates the medication, it closes these vessels while sparing surrounding tissue. Learn more about photodynamic therapy and when it may be recommended.
How Retinal Laser Treatment Compares to Other Options
Anti-VEGF injections are another common treatment for diabetic eye disease and macular edema. Injections often need to be repeated every four to eight weeks for extended periods. Laser treatment may require fewer sessions over time, though some conditions respond better to injections or a combination of both treatments.
Vitrectomy surgery removes blood or scar tissue from inside the eye and is reserved for advanced cases. Laser treatment is less invasive and can often prevent the need for surgery when performed early. For conditions like proliferative diabetic retinopathy, laser treatment is typically tried before considering surgery.
Many patients benefit from combining laser treatment with injections. Research published in Frontiers in Endocrinology in 2022 found that combining panretinal photocoagulation with anti-VEGF injections improved visual outcomes compared to laser alone for diabetic retinopathy. Your retina specialist will recommend the best approach based on your specific condition.
What to Expect During Treatment
Your retina specialist will dilate your pupils with eye drops so the retina can be clearly seen. Numbing drops are applied to ensure you feel no pain during the procedure. The entire preparation takes about 20 to 30 minutes as the drops take effect.
You will sit at a specialized instrument similar to the one used for routine eye exams. A special contact lens is placed on your eye to help focus the laser beam precisely. You will see bright flashes of light as the laser is applied. Each session typically lasts 10 to 30 minutes depending on how much treatment is needed.
Most patients feel minimal discomfort due to the numbing drops. Some people notice a mild aching sensation, especially during extensive treatments like panretinal photocoagulation. Let your doctor know if you feel significant discomfort so adjustments can be made.
Your vision will be blurry for several hours from the dilating drops and the bright laser light. Arrange for someone to drive you home. You can typically return to normal activities the next day, though your doctor may recommend avoiding heavy lifting or strenuous exercise for 24 to 48 hours.
Recovery and Follow-Up Care
Mild discomfort, light sensitivity, and blurry vision are common in the first day or two. Wearing sunglasses when outdoors can help with light sensitivity. Over-the-counter pain relievers can address any mild aching if needed.
Contact your eye doctor promptly if you experience severe eye pain, sudden vision loss, new floaters, or flashing lights. These symptoms could indicate a complication that needs immediate attention. While serious problems are rare, early treatment leads to better outcomes.
Your retina specialist will schedule a follow-up visit, typically four to eight weeks after treatment. During this visit, your doctor will examine your retina and may take imaging scans to assess how well the treatment is working. Additional laser sessions may be recommended based on your response.
Retinal conditions often require ongoing monitoring even after successful laser treatment. Regular eye exams help detect any new problems early. Keeping all scheduled appointments is essential for protecting your vision over time.
Potential Side Effects and Risks
Temporary blurred vision and light sensitivity are expected after treatment. Some patients notice small blind spots in their peripheral vision where laser spots were placed, particularly after panretinal photocoagulation. These spots usually become less noticeable over time as the brain adjusts.
Extensive laser treatment to the peripheral retina can reduce night vision and side vision. This is a tradeoff to prevent more serious vision loss from bleeding or retinal detachment. Your doctor will discuss these considerations before treatment.
Serious complications are uncommon but can include bleeding, retinal detachment, or accidental damage to the central macula. Choosing an experienced retina specialist reduces these risks. Modern laser systems with precise controls also help minimize complications.
Our Retina Team at Greenwich Ophthalmology Associates
Dr. Jerry W. Tsong is our medical retina specialist. He completed his fellowship in medical retina at the Doheny Eye Institute after graduating from Harvard Medical School. Dr. Tsong has extensive experience treating complex retinal disorders including diabetic retinopathy, macular degeneration, and retinal vascular diseases.
Our office is equipped with in-office laser equipment for retinal photocoagulation procedures. We also offer anti-VEGF injections and photodynamic therapy when these treatments are appropriate. Having multiple treatment options available allows us to create personalized treatment plans for each patient.
Greenwich Ophthalmology Associates has served the greater NY/CT region for more than 50 years. Our retina specialist works closely with our other fellowship-trained physicians to provide coordinated care for patients with complex eye conditions. Dr. Tsong is also fluent in Mandarin Chinese and can communicate care to Mandarin-speaking patients.
Frequently Asked Questions
The number of sessions depends on your specific condition and how your eye responds. Some retinal tears require only one treatment session. Diabetic retinopathy may need two to four sessions of panretinal photocoagulation, sometimes with additional touch-up treatments later. Your retina specialist will give you a more specific estimate after examining your eyes.
Laser treatment is designed to prevent further vision loss rather than restore vision that has already been damaged. In some cases, reducing swelling can improve vision somewhat. The main goal is to stabilize your condition and protect the vision you currently have.
The laser scars created during treatment are permanent. However, the underlying condition may continue to progress, especially in diseases like diabetic retinopathy. This is why ongoing monitoring and sometimes additional treatments are necessary to maintain the benefits.
Delaying or declining treatment for conditions like proliferative diabetic retinopathy or retinal tears significantly increases your risk of severe vision loss. Retinal tears can progress to detachments, and abnormal blood vessels can bleed into the eye. Early treatment offers the best chance of preserving your sight.
Most patients can continue their blood-thinning medications for laser treatment since there is no incision involved. However, you should always inform your retina specialist about all medications you take. Your doctor will provide specific guidance based on your medical history.
You should arrange for someone else to drive you home after laser treatment. The dilating drops and bright laser light will blur your vision for several hours. Most patients can resume driving the next day once their vision returns to normal.
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