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Overview
What Is Macular Degeneration?
Macular degeneration is an eye disease that damages the macula, the central part of the retina responsible for sharp, detailed vision. It can make reading, recognizing faces, or seeing fine details harder, while peripheral (side) vision is often preserved. Age-related macular degeneration is the most common form and usually affects older adults. The disease may develop slowly or, in some cases, cause faster changes in central vision.
Symptoms
Macular Degeneration Symptoms
Early macular degeneration may cause no noticeable symptoms, so regular eye examinations are important. When symptoms develop, they may affect one eye or both eyes, and the changes can be gradual or sudden depending on the type of disease.
- Central vision may become blurred, dim, or less detailed.
- Straight lines may appear wavy, bent, or interrupted, a change called metamorphopsia.
- Reading or recognizing familiar faces may become more difficult.
- You may need brighter light for reading or other close-up tasks.
- A blank, gray, or dark spot may appear in the center of your vision, called a scotoma.
Seek prompt eye care
Sudden vision changes need assessment
Sudden new distortion, a central shadow, or rapidly worsening vision can indicate wet disease, in which abnormal blood vessels leak beneath the retina. Contact an ophthalmologist or urgent eye service promptly rather than waiting for a routine appointment.
Causes
What Causes Macular Degeneration?
In dry macular disease, age-related changes can lead to waste deposits and deterioration of the light-sensing cells in the macula. Wet disease occurs when fragile, abnormal blood vessels grow beneath the retina and leak fluid or blood. These changes can damage the macula and cause central vision loss; they are not explained by one single cause.
| Type | What happens | Typical pattern |
|---|---|---|
| Dry macular degeneration | Macular cells gradually deteriorate and waste deposits may form. | Often develops slowly, although advanced dry disease can cause significant central vision loss. |
| Wet macular degeneration | Abnormal blood vessels grow beneath the retina and leak fluid or blood. | Can worsen more quickly and may cause sudden distortion or central vision changes. |
Macular degeneration is not caused by ordinary reading or by appropriate use of the eyes. Inherited susceptibility may contribute, but having a genetic tendency does not make the condition inevitable. This age-related eye degeneration reflects a combination of aging, biology, and other risk factors.
Risk Factors
Macular Degeneration Risk Factors
- Older age is a major nonmodifiable risk factor for age-related macular degeneration.
- A family history or inherited genetic susceptibility can increase the likelihood of disease.
- Having macular degeneration in the other eye increases the risk of developing it in the affected eye.
- Smoking increases the risk of developing and worsening macular disease.
- Uncontrolled cardiovascular risk factors, including high blood pressure or cholesterol, may increase risk.
- Excess ultraviolet exposure may contribute to eye damage over time.
- An imbalanced diet may provide less of the nutrients associated with eye health.
Having a risk factor does not guarantee that someone will develop macular degeneration. People with a family history, or with disease in one eye, should discuss individualized eye-exam timing with an eye-care professional. Risk-factor management can support eye health but cannot remove inherited or age-related risk.
Complications
Macular Degeneration Complications
- Permanent central vision loss can occur as the macula becomes damaged.
- Reading, writing, or recognizing faces may become increasingly difficult.
- Vision changes can increase the risk of falls and may limit driving.
- Loss of central vision can reduce independence with daily activities.
- Ongoing vision loss may contribute to anxiety, frustration, or depression.
Macular degeneration usually does not cause complete blindness because side vision may remain. However, severe loss of central macular degeneration vision can still substantially affect reading, mobility, work, driving, and other daily activities.
Diagnosis
How Macular Degeneration Is Diagnosed
Diagnosis typically begins with visual acuity testing and a dilated retinal examination. The eye-care professional reviews symptoms and family history and assesses both eyes, even if only one eye seems affected. These steps help identify changes in the macula and determine whether additional imaging is needed.
- Optical coherence tomography (OCT) creates detailed images of retinal layers and can show fluid or structural changes.
- Fundus photography records images of the retina and can help track macular changes over time.
- Fluorescein angiography may be used when leakage or abnormal blood-vessel growth is suspected.
- An Amsler grid may be used at home or in the office to monitor new distortion in central vision.
Testing helps classify dry macular degeneration versus wet disease, identify new blood-vessel growth or fluid, and monitor changes over time. This information guides decisions about follow-up and wet macular treatment.
Treatment & Management
Macular Degeneration Treatment and Management
Managing Dry Macular Degeneration
Management of dry disease may include scheduled eye examinations, stopping smoking, balanced nutrition, and low-vision rehabilitation when needed. An eye specialist may recommend an age-related eye disease supplement formulation such as AREDS2 for some people at specific stages of disease. Supplements do not reverse established macular degeneration and should be individualized, especially when a person takes other medicines or has other health conditions.
Treating Wet Macular Degeneration
Treatment expectations
Treatment controls disease rather than curing it
Be cautious of claims that someone has permanently cured macular degeneration. Current treatments aim to slow progression, control leakage, or preserve vision; they do not reliably restore all central vision already lost. Wet disease is commonly treated with repeated intravitreal anti-VEGF injections, monitoring, and sometimes photodynamic therapy when appropriate.
Prevention
Can Macular Degeneration Be Prevented?
- Do not smoke, and seek support to stop if you currently smoke.
- Eat a nutrient-dense diet that includes leafy greens, fish, and a variety of other healthy foods.
- Exercise regularly according to your health professional’s advice.
- Manage blood pressure and cholesterol with lifestyle measures and prescribed treatment.
- Protect your eyes from excessive sunlight with appropriate UV-blocking eyewear.
Regular comprehensive dilated eye examinations are important for early detection and monitoring, especially for older adults, people with a family history, or those with disease in one eye. Age-related and inherited risks cannot be eliminated, so prevention steps lower risk but cannot guarantee that macular degeneration will not develop.
Outlook and Prognosis
Outlook and Prognosis
Dry macular degeneration often progresses gradually, although some people develop advanced disease called geographic atrophy. Wet disease can cause faster vision loss and may develop after dry disease. The course varies between people and between the two eyes, so ongoing follow-up is important.
| Disease type | Typical course | Key outlook consideration |
|---|---|---|
| Dry macular degeneration | Often progresses slowly, but it can advance to geographic atrophy. | Regular monitoring helps detect progression and identify changes that may require additional care. |
| Wet macular degeneration | May cause more rapid changes in central vision because of leakage or bleeding. | Prompt treatment and repeated follow-up are important for controlling leakage and preserving vision. |
Early detection, prompt treatment of wet disease, adherence to follow-up, smoking cessation, and low-vision support can improve the chance of preserving function. However, retinal cells that have been permanently lost may not recover. The long-term goal is to protect remaining macular degeneration vision and support daily independence.
When Should You See a Doctor
When Should You See a Doctor for Macular Degeneration?
- Arrange an eye examination for new blurred or distorted central vision.
- Seek an evaluation if reading or recognizing faces becomes more difficult.
- Arrange prompt assessment for a new blind spot or central blank area.
- People with a family history or disease in the other eye should discuss appropriate examination timing with an eye-care professional.
Get urgent eye care
Sudden changes can threaten vision
Seek same-day or urgent ophthalmic care for sudden vision loss, rapidly worsening distortion, a new dark curtain or central shadow, or sudden new spots and flashes. These symptoms may indicate wet macular disease or another urgent eye problem.
If you already have macular degeneration, follow the examination schedule set by your eye specialist and report any change in either eye promptly. Do not wait for the next routine visit if central vision suddenly changes.
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1 topic
Macular Degeneration
Ophthalmology
