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Anti-VEGF Therapy: What It Is and How It Works

Posted on May 21, 2026 by SERA

When it comes to retinal health, few factors play a pivotal role as the vascular endothelial growth factor (VEGF) protein. While VEGF is vital for normal eye function and blood vessel formation, excessive levels can lead to serious eye conditions, including wet age-related macular degeneration (AMD) and diabetic retinopathy. Anti-VEGF therapy has emerged as an effective treatment option, specifically designed to target this protein, helping to prevent vision loss and slow the progression of retinal diseases. Understanding anti-VEGF therapy is crucial to maintaining retinal health and overall quality of life.

Understanding VEGF

VEGF is a key protein that promotes the growth of new blood vessels in our body, a process known as angiogenesis. This is crucial for healing and for normal physiological functions. However, when VEGF is produced in excess, it can lead to serious complications, particularly in the context of eye health.

In cases of wet AMD and diabetic retinopathy, our bodies produce too much VEGF. This overproduction can lead to unnecessary growth of blood vessels in the retina, which are often fragile and prone to leakage. This leakage can lead to swelling, distortion, and potential vision loss, making it crucial to manage the effects of this excess VEGF.

The Role of Anti-VEGF Injections

To combat the issues arising from excess VEGF, healthcare professionals often turn to a treatment known as anti-VEGF injections. The process involves several steps:

  • Local anesthetic application: A local anesthetic is applied to minimize discomfort during the injection.
  • Injection process: A fine needle is used to inject the medication directly into the vitreous gel of the eye, targeting abnormal blood vessel growth and leakage.
  • Post-procedure monitoring: After the quick procedure, patients are monitored briefly to ensure there are no immediate complications.
  • Follow-up visits: Patients return for follow-up appointments to assess the effectiveness of the treatment.

For those with wet AMD or diabetic retinopathy, these injections can significantly improve vision and prevent further disease progression.

The Importance of Ongoing Care

While anti-VEGF injections can be highly effective, continuous monitoring is crucial to evaluate the progression of the condition and to determine if repeat injections are necessary. Many patients end up in a routine of follow-up appointments, during which their healthcare provider assesses their response to treatment and ensures that their vision remains stable.

For world-class retinal treatment, including anti-VEGF injections, turn to the experienced team at Southeastern Retina Associates. If you have a retinal condition or have experienced any symptoms, please consult your regular eye doctor as soon as possible, and they may refer you to one of our offices. We see patients in Chattanooga, Knoxville, the Tri-Cities, and more.