AMD stands for age-related macular degeneration, a common eye disease that damages the macula, the small central area of the retina responsible for sharp, detailed sight. It affects roughly 8 million people worldwide and is the leading cause of vision loss in adults over 50. AMD erodes central vision, the kind you use to read, recognize faces, and drive, while leaving peripheral (side) vision intact.
How AMD Changes What You See
The macula handles everything you look at directly. When it deteriorates, the center of your visual field becomes unreliable. Early on, you might notice that straight lines appear wavy or bent, text looks blurry even with the right glasses, or colors seem less vivid than they used to. As the disease progresses, dark or blank spots can develop right in the middle of your vision, making it hard to see the face of someone standing in front of you even though you can see them clearly in your peripheral vision.
People with AMD are not completely blind. The disease specifically targets central vision, so side vision stays functional. This means you can usually navigate a room and maintain some independence, but tasks requiring fine detail, like reading, threading a needle, or checking a phone screen, become increasingly difficult.
Dry AMD vs. Wet AMD
There are two types, and they behave very differently.
Dry AMD accounts for the large majority of cases. It happens when the macula thins with age and small yellowish deposits called drusen accumulate beneath the retina. These deposits are made of lipids, proteins, and inflammatory material, and they interfere with the cells that keep the macula healthy. Dry AMD moves through three stages (early, intermediate, and late) and typically progresses slowly over several years. Many people with early dry AMD have no symptoms at all. Late-stage dry AMD, called geographic atrophy, involves patches of retinal cells dying off permanently.
Wet AMD is less common but far more urgent. It occurs when abnormal blood vessels grow underneath the retina and leak blood or fluid into the macula. This can cause rapid, severe vision loss over weeks or even days. Any stage of dry AMD can convert to wet AMD, and wet AMD is always considered late-stage disease. The sudden appearance of wavy lines, a dark spot in your central vision, or a noticeable drop in sharpness can signal this conversion.
Who Is Most at Risk
Age is the single biggest risk factor. AMD rarely appears before 50, and the odds climb steeply after 60. Smoking significantly increases risk, and quitting is one of the most effective preventive steps. Family history matters too: having a close relative with AMD raises your likelihood. Other contributors include obesity, high blood pressure, a diet low in leafy greens and fish, and prolonged UV exposure. Lighter eye color may also play a small role.
Monitoring Your Vision at Home
A tool called an Amsler grid helps you track changes between eye appointments. It looks like a sheet of graph paper with a dot in the center. To use it, wear your normal reading glasses, hold the grid 12 to 15 inches from your face in good light, and cover one eye. Stare at the center dot and notice whether any of the surrounding lines look wavy, blurry, dark, or missing. Repeat with the other eye. Doing this once a day, every day, helps you catch sudden changes, especially the kind that signal a conversion from dry to wet AMD, when early treatment makes the biggest difference.
Treatments for Wet AMD
Wet AMD is treated with injections directly into the eye that block a protein responsible for abnormal blood vessel growth. The procedure sounds daunting, but the eye is numbed first, and most patients describe it as uncomfortable rather than painful. Several medications are FDA-approved for this purpose, including ranibizumab (Lucentis), aflibercept (Eylea), and faricimab (Vabysmo). Newer formulations like Eylea HD and Vabysmo have extended the time between injections, so some patients need only three to four treatments per year instead of the six to twelve that older options required.
These injections don’t cure wet AMD, but they can stabilize vision and sometimes improve it. Missing or delaying treatments allows fluid and bleeding to resume, so consistent follow-up is essential.
Treatments for Dry AMD
For years, there was no treatment for advanced dry AMD. That changed in 2023 when the FDA approved two drugs that target part of the immune system’s complement pathway, which drives the cell death seen in geographic atrophy. These are the first therapies that can slow the expansion of dead retinal tissue in late-stage dry AMD. They don’t restore lost vision, but they may help preserve what remains.
For intermediate dry AMD, a specific supplement formula called AREDS2 has been shown to reduce the risk of progressing to advanced disease. The formula contains vitamin C (500 mg), vitamin E (180 mg), zinc (80 mg), copper (2 mg), lutein (10 mg), and zeaxanthin (2 mg). These are available over the counter. The formula is designed for people who already have intermediate AMD or late AMD in one eye; it is not proven to prevent AMD from developing in the first place.
Living With AMD Vision Loss
When central vision declines, practical adaptations can make daily life significantly easier. Magnifiers are the most common tool, ranging from simple handheld lenses with built-in lights to electronic desktop magnifiers that display enlarged text on a screen. Many people now use their smartphone or tablet camera as an on-the-go magnifier, and accessibility features built into modern phones can read text aloud, identify objects, and enlarge displays.
Around the house, contrast and color become your allies. Brightly colored cups, multi-colored chopping boards, large-button phones, and oversized clocks all reduce the reliance on fine central vision. Typoscopes, simple cards with a rectangular window cut out, help isolate a single line of text for reading or writing. Adjustable task lighting positioned directly over your work surface makes a noticeable difference, since AMD-affected eyes often need two to three times more light than healthy eyes for the same task.
Local vision rehabilitation services can connect you with occupational therapists who specialize in helping people adapt to central vision loss. Many communities also have resource centers where you can try out equipment like talking watches, large-print address books, accessible phones, and electronic readers before purchasing.