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Signs & Symptoms

Age-related macular degeneration (AMD) is an irreversible destruction of the central area of the retina, called the macula, which can lead to blind spots and distorted central vision. Continue reading to learn more about the symptoms and why early detection is so important.

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What to Watch For

During the early stages of AMD, particularly if only one eye is affected, you may not have symptoms. Macular degeneration does not cause pain to help suggest that something is wrong.

An eye doctor may be able to detect early signs of the disease before symptoms appear. Therefore, regular eye examinations are critical to detect these signs as soon as possible.

Early Warning Signs of Macular Degeneration

At first, the dry form of AMD often causes slightly blurred central vision, both close up and far. The center of vision may become fuzzy or shadowed, and this area grows larger as the disease progresses. Blind spots may develop, and people normally have more difficulty seeing color and fine detail.

Visual field defect

The wide angle of vision that a healthy eye can see is called the visual field. As macular degeneration progresses, the center of a person’s visual field may become smudged, distorted, or lost. This defect causes problems with reading, driving, watching TV, and recognizing faces.

Contrast sensitivity

It becomes more difficult to see textures and subtle changes in the environment. If you cannot see slight contrasts and textures in pavements or stairs, it can be dangerous and increase the risk of falls. You may have difficulty distinguishing between two colors of a similar hue when placed side by side.

Poor tolerance for changing light levels

It may become difficult for your eyes to adjust when driving and walking at sunset, or when going from a well-lighted room to a darker one. Glare can worsen the problem. For example, a bright shaft of sunlight streaming through a window may cause everything outside the glare to “blackout.”

Need for higher light levels

You may need brighter light levels for reading, cooking, and performing day-to-day tasks.

Impaired depth perception

An inability to judge distances properly can also make walking harder, potentially leading to missteps and falls.

How Macular Degeneration May Affect Vision

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A family on the beach.

Early Dry Macular Degeneration

In the early stages of dry macular degeneration, cells in the macula begin to sicken, and parts of the central vision become blurry. This may be difficult to notice at first, especially if the other eye is healthy, which can often hide the problems of the sick eye. Some people may find that they need more light to read, but otherwise may not notice problems with their vision.

Intermediate Dry Macular Degeneration

As dry macular degeneration slowly progresses, the blurring worsens with the blurred area increasing in size. Some blind spots (called scotomas) may develop. The person may begin to have trouble telling the difference between similar colors, or shades of the same color.

Late Dry Macular Degeneration

In the very late stage of dry macular degeneration, or geographic atrophy, macula cells begin to die, and large portions of the center of vision may become blurred. People at this stage may have blind spots as well as some areas that appear wavy or distorted. Not all dry macular degeneration will progress to wet macular degeneration, but when it does it often progresses much more quickly than the dry form.

Is it Wet AMD?

Wet AMD is a more severe form of the disease where abnormal blood vessels grow behind the macular as retinal pigment epithelial cells and photoreceptor cells die. In addition to the above signs, straight lines may appear wavy and central vision loss can occur rapidly, sometimes within days or weeks.

Illustration of wet macular degeneration showing central vision blind spot and retinal damage.

Early Detection Can Protect Sight

In addition to regular eye exams, you can detect early signs of macular degeneration at home using an Amsler grid. The tool uses a simple grid pattern to show spots in your field of vision. If you notice any changes to your vision, you should have your eyes checked by an ophthalmologist.

A man covering his eye to use the Amsler grid.

Do You Think You or a Loved One Might Have Macular Degeneration?

If you suspect that you or a loved one is experiencing changes in their central vision, seek advice and a thorough evaluation by an ophthalmologist. It’s important to get early medical attention if you can.