Diabetic retinopathy laser treatment has been used for decades to manage one of the most common complications of long-standing diabetes. Diabetic eye disease develops when prolonged high blood sugar damages the small blood vessels of the retina, leading to leakage, abnormal vessel growth, and, in advanced stages, a risk of severe vision loss. Laser therapy remains an important tool for slowing this process, often alongside other treatments such as injectable medications.
How Does Diabetes Damage the Retina?
Diabetic retinopathy progresses through stages, beginning with mild changes such as small areas of vessel weakening and progressing, in some patients, to more advanced stages involving abnormal new blood vessel growth, a process called neovascularization. These fragile new vessels can bleed into the eye or contribute to scar tissue that distorts or detaches the retina. Diabetic macular edema, a related complication involving fluid accumulation in the central part of the retina, can also threaten vision independent of how advanced the overall retinopathy is.
What Is Panretinal Photocoagulation?
Panretinal photocoagulation, often referred to as PRP laser treatment, is used for more advanced, proliferative diabetic retinopathy, where abnormal vessel growth has begun or is at high risk. The treatment applies hundreds to over a thousand small laser burns across the peripheral retina, avoiding the central macula. The rationale is that reducing the oxygen demand of the peripheral retina, which is often poorly perfused in advanced diabetic retinopathy, can reduce the stimulus for abnormal vessel growth. PRP laser treatment is typically delivered over multiple sessions rather than all at once, in part to reduce the risk of temporary side effects such as reduced night vision or peripheral vision changes.
What Is Macular Laser Treatment?
Macular laser, a more targeted and gentler approach than PRP, is used specifically for diabetic macular edema, where fluid leakage threatens central vision. Focal or grid laser patterns are applied to specific leaking vessels or areas of the macula, aiming to reduce fluid accumulation and stabilize vision. In recent years, macular laser is often used alongside or after injectable anti-VEGF medications, which have become a primary treatment for macular edema, with laser reserved for cases where it can provide additional benefit.
What Can Patients Expect From Treatment?
Diabetic retinopathy laser treatment is generally described as a way to slow or stabilize disease progression rather than restore vision already lost. Many patients require multiple sessions, and some experience temporary visual side effects such as reduced night vision, mild blurring, or peripheral vision changes following PRP. Long-term outcomes depend heavily on continued blood sugar control and regular retinal monitoring, since diabetic eye disease can continue to progress even after laser treatment if underlying diabetes management is not optimized.
The Role of Endolaser Technology in Vitreoretinal Cases
In more advanced cases involving vitreous hemorrhage or significant scar tissue, diabetic retinopathy may require vitrectomy surgery, during which laser is applied directly to the retina using a fiber-optic endolaser probe inserted into the eye. INVAMED manufactures the Horus Optic Laser Probes, used in vitreoretinal surgery for photocoagulation, available in 20, 23, 25, and 27 gauge configurations as stated by the manufacturer. More information can be found on the INVAMED product page for the Horus Optic Laser Probes. A qualified retina specialist determines whether laser treatment, injectable therapy, surgery, or a combination is appropriate for an individual patient's diabetic eye disease.
How often should someone with diabetic retinopathy have eye exams?
Frequency of eye examinations depends on the severity of retinopathy, and a retina specialist or ophthalmologist typically recommends a personalized monitoring schedule, which may range from annual exams for mild disease to every few months for more advanced or actively treated cases. Individuals with diabetes should follow their physician's specific recommendations.
Device availability and regulatory status vary by country. Please contact INVAMED or your authorized local distributor for current regulatory information applicable to your region.