What Is Geographic Atrophy (GA)?
GA is a progressive condition that results in the loss of retinal cells in the macula, leading to the thinning and dysfunction of this critical part of the retina. Unlike wet AMD, GA does not involve abnormal blood vessel growth but can still cause severe vision impairment over time.
Symptoms of Geographic Atrophy
GA often develops gradually, with symptoms that may include:
- Blurry or distorted central vision
- Difficulty reading or recognizing faces
- Increased reliance on peripheral vision
- A dark or empty spot in the central visual field
If you experience these symptoms, an evaluation with a retina specialist is crucial to determine the best course of action.
Common Causes and Risk Factors
- Age: Most common in individuals over 60 years old.
- Family History: Genetics play a significant role in the development of GA.
- Lifestyle Factors: Smoking and poor diet can increase risk.
- Existing AMD: GA typically develops as an advanced form of dry AMD.
How We Diagnose Geographic Atrophy
At River City Retina Consultants, we use state-of-the-art diagnostic tools to accurately assess GA:
- Dilated Eye Exam: Provides a detailed view of the retina and macula.
- Optical Coherence Tomography (OCT): High-resolution imaging to identify areas of atrophy and monitor progression.
- Fundus Autofluorescence (FAF): Highlights areas of retinal damage and helps track changes over time.
Treatment Options for Geographic Atrophy
While there is currently no cure for GA, innovative treatments and management strategies can slow its progression and support vision preservation:
- FDA-Approved Therapies: Emerging treatments targeting the complement pathway to reduce the rate of retinal cell loss.
- Low Vision Rehabilitation: Specialized tools and techniques to maximize remaining vision.
- Nutritional Support: Supplements like those in the AREDS2 formula may help slow the progression of dry AMD, including GA.
- Lifestyle Adjustments: Recommendations for a healthy diet, smoking cessation, and managing underlying health conditions.
