The Role of Anti-VEGF Injections in Modern Retinal Care
Vascular endothelial growth factor (VEGF) is a protein that stimulates the growth of new blood vessels. In several retinal diseases, including diabetic retinopathy and wet age-related macular degeneration (AMD), the eye produces excess VEGF in response to damage or reduced oxygen supply. This can lead to abnormal blood vessel growth and leakage in the retina, which may threaten vision. Anti-VEGF injections work by blocking this signal, helping control disease activity and protect vision.
Blocking VEGF: Why It Helps
Blocking VEGF provides several benefits to the retina by:
- Reducing leakage and swelling: Excess VEGF increases blood vessel permeability, leading to fluid leakage into the retina and macula; blocking it helps reduce swelling and restore clarity of vision.
- Preventing abnormal blood vessel growth: In conditions like diabetic retinopathy, excess VEGF is produced due to poor oxygen flow, leading to abnormal vessel growth. Anti-VEGF treatment helps halt this growth, preventing bleeding and scarring.
- Shrinking existing abnormal blood vessels: Treatment can cause fragile, newly formed vessels to contract, helping protect retinal tissue from ongoing structural damage.
- Stabilizing vision: Anti-VEGF injections help stabilize or improve visual acuity by preventing new hemorrhages and reducing swelling.
- Protecting retinal integrity: Reducing excessive VEGF helps protect the retina's delicate layers from permanent damage and atrophy.
What to Expect From the Anti-VEGF Injection Process
Anti-VEGF injections are an in-office procedure that takes 10–15 minutes. While the thought of receiving an injection in the eye can be intimidating, the process is straightforward, simple, and generally painless. The procedure involves several steps, including:
- Preparation: The eye is cleaned with an antiseptic solution to minimize the risk of infection, and numbing eye drops are applied to ensure comfort.
- Procedure: A wire speculum is used to hold the eye open, allowing the retina specialist to inject the anti-VEGF medication directly into the vitreous cavity, the gel-like space in the center of the eye, using a thin needle. Patients may feel slight pressure during the injection, but they typically don’t experience pain.
- Recovery: After the procedure, it's normal to experience some irritation, floaters, or blurry vision, which typically resolve quickly.
Patients usually start with monthly injections and may transition to maintenance treatments every 4 to 12 weeks, depending on the results of imaging studies.
The Importance of Consistent Treatment
Consistent anti-VEGF treatment is essential for preserving long-term vision. Patients who adhere to a regular treatment schedule often experience improved visual acuity and more stable overall eye health. This proactive approach empowers individuals to maintain their quality of life, enabling them to fully engage in activities they enjoy and navigate their world confidently.
Because consistent treatment is so important, it’s crucial to see a retinal specialist regularly to detect retinal conditions early and improve treatment outcomes. At Northeast Wisconsin Retina Associates, our experienced retina specialists diagnose a wide range of retinal conditions and offer advanced treatments, including anti-VEGF injections. We proudly serve patients throughout Northeast Wisconsin and beyond, including Appleton, Green Bay, Sheboygan, North Fond du Lac, Oshkosh, and Stevens Point. Contact us today for more information or to schedule an appointment.