Age-Related Macular Degeneration (AMD)
What is Age-Related Macular Degeneration (AMD)?
Age-related macular degeneration is an eye disease that damages the macula. The macula is the central part of your retina that allows you to see fine details clearly. As AMD progresses, central vision becomes blurry or distorted. Straight lines may appear wavy. Dark spots can develop in your central field of view.
There are two main types of AMD. Dry AMD develops slowly when drusen, tiny yellow deposits, build up under the macula. Wet AMD happens when abnormal blood vessels grow and leak fluid under the retina. Wet AMD progresses faster and causes more severe vision loss. About 10 to 15 out of every 100 people with AMD develop the wet form.
AMD is the leading cause of vision loss in adults over 50 in developed countries. Early detection matters because treatments can slow progression and preserve the vision you have. Your lifestyle choices and nutrition status play important roles in both prevention and management.
Symptoms
- Blurry or fuzzy central vision
- Straight lines appearing wavy or bent
- Dark or empty areas in the center of your vision
- Difficulty recognizing faces
- Trouble reading or seeing fine details
- Colors appearing less bright or vivid
- Need for brighter light when reading
- Difficulty adapting to low light levels
Early stage AMD often has no symptoms at all. Many people do not notice vision changes until the disease reaches an intermediate or advanced stage. This is why regular eye exams become critical after age 50. Your peripheral vision usually stays intact even as central vision declines.
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Causes and risk factors
Age is the primary risk factor for AMD. Your risk increases significantly after age 55. Smoking doubles your risk of developing AMD and accelerates disease progression. Family history matters too, as genetics play a strong role. If a parent or sibling has AMD, your risk increases substantially.
Chronic inflammation and oxidative stress damage retinal cells over time. Poor circulation reduces oxygen and nutrient delivery to the macula. Low omega-3 fatty acid levels, particularly DHA, are linked to higher AMD risk. DHA is concentrated in retinal tissue and supports eye health. Other risk factors include high blood pressure, obesity, prolonged sun exposure without eye protection, and a diet low in colorful vegetables and fish.
How it's diagnosed
An eye doctor diagnoses AMD through a comprehensive eye exam. This includes a visual acuity test, dilated eye exam, and often an Amsler grid test to check for distortion. Optical coherence tomography, or OCT, creates detailed images of your retina. Fluorescein angiography may be used to detect abnormal blood vessels in wet AMD.
Blood testing plays an important role in AMD prevention and management strategies. Measuring omega-3 fatty acid levels helps identify nutritional deficiencies that increase AMD risk. Rite Aid offers Omega-3 Fatty Acids testing as an add-on to help guide supplementation strategies. Low omega-3 levels can be addressed through diet changes or targeted supplements to support retinal health and potentially slow disease progression.
Treatment options
- Quit smoking immediately to slow progression and reduce risk
- Eat leafy greens, colorful vegetables, and fatty fish rich in omega-3s
- Take AREDS2 vitamins if recommended by your eye doctor
- Supplement with omega-3 fatty acids, especially DHA, if levels are low
- Protect eyes from UV light with sunglasses outdoors
- Control blood pressure and maintain a healthy weight
- Anti-VEGF injections for wet AMD to stop abnormal blood vessel growth
- Photodynamic therapy for certain cases of wet AMD
- Low vision aids and rehabilitation services as needed
- Regular monitoring with home Amsler grid testing
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Frequently asked questions
Dry AMD develops slowly as yellow deposits called drusen accumulate under the macula. Wet AMD occurs when abnormal blood vessels grow and leak fluid or blood under the retina. Wet AMD progresses faster and causes more severe vision loss. About 10 to 15 out of 100 people with dry AMD eventually develop the wet form.
While you cannot change your age or genetics, lifestyle choices significantly impact AMD risk. Not smoking is the single most important prevention step. Eating a diet rich in leafy greens, colorful vegetables, and omega-3 fatty fish helps protect your eyes. Regular exercise, maintaining healthy blood pressure, protecting eyes from UV light, and ensuring adequate omega-3 levels all reduce risk.
Omega-3 fatty acids, particularly DHA, are highly concentrated in retinal tissue. They reduce inflammation and support healthy cell membranes in the eye. Studies show that low omega-3 levels are associated with increased AMD risk. Testing your omega-3 levels can help identify deficiencies and guide supplementation to support retinal health.
AMD affects central vision but typically does not cause complete blindness. Your peripheral vision usually remains intact, allowing you to navigate and maintain independence. Early detection and treatment can slow progression and preserve much of your central vision. Many people with AMD continue daily activities with vision aids and adaptations.
Eye exam frequency depends on your AMD stage. Early stage AMD may only require annual exams. Intermediate AMD often needs checks every 6 to 12 months. Advanced AMD or wet AMD requires more frequent monitoring, sometimes every few months. Your eye doctor will create a personalized schedule based on your specific condition.
AREDS2 vitamins are a specific formulation of nutrients shown to slow AMD progression. The formula includes vitamin C, vitamin E, zinc, copper, lutein, and zeaxanthin. Large clinical studies found this combination reduced the risk of advanced AMD by about 25 percent in people with intermediate disease. Your eye doctor can recommend if AREDS2 vitamins are right for you.
Yes, nutrition plays a significant role in AMD prevention and management. Leafy greens like spinach and kale contain lutein and zeaxanthin that protect the macula. Fatty fish provide omega-3s that reduce inflammation and support retinal health. Colorful fruits and vegetables offer antioxidants that fight oxidative stress. A Mediterranean-style diet is especially protective for eye health.
Anti-VEGF injections treat wet AMD by blocking a protein that causes abnormal blood vessel growth. Your eye doctor numbs your eye with drops and cleans the area. A tiny needle injects medicine into the vitreous gel of your eye. The procedure takes only minutes and is typically painless. Most people need injections every 4 to 8 weeks initially.
Genetics play a strong role in AMD risk. If you have a parent or sibling with AMD, your risk increases significantly. Several genes have been identified that increase susceptibility to the disease. However, having genetic risk does not guarantee you will develop AMD. Lifestyle factors like not smoking, eating well, and maintaining healthy omega-3 levels can modify your genetic risk.
See an eye doctor immediately if you notice sudden changes in your vision, especially new distortion or dark spots. Regular vision changes like slowly increasing blurriness warrant an appointment within a few weeks. If you are over 50, schedule comprehensive eye exams annually even without symptoms. Early detection allows for earlier intervention and better outcomes.