Macular degeneration is an eye condition that damages the macula, the small area at the center of the retina responsible for sharp, detailed vision. It most often develops with age and is called age-related macular degeneration (AMD). It can make reading, recognizing faces, and driving harder by blurring or distorting central vision, while side vision is often preserved. Early disease may cause no noticeable symptoms.
What happens to the eye during macular degeneration?
The retina is the light-sensitive layer at the back of the eye. It receives light and sends visual signals to the brain. Near the center of the retina is the macula, which helps you see fine details clearly, recognize faces, read small print, and distinguish objects directly in front of you.
Macular degeneration develops when the macula becomes damaged. As the condition progresses, the ability to see details in the center of the visual field can decline. Peripheral vision, which allows you to see things to the side, is often preserved. The condition does not usually cause complete blindness, but central vision loss can affect independence and everyday activities.
According to the National Eye Institute, age-related macular degeneration is particularly important in older adults because it can interfere with reading, driving, recognizing faces, and other tasks that depend on clear central vision.
Although the term most commonly refers to age-related macular degeneration, other retinal conditions can affect the macula. The cause, course, and treatment depend on the specific condition identified during an eye examination.
What are the main types of macular degeneration?
Age-related macular degeneration is generally divided into two main forms: dry and wet. Both affect central vision, but the changes occurring in the retina are different.
Dry macular degeneration
Dry macular degeneration, also called atrophic AMD, is the more common form. It develops when the macula gradually changes and the light-sensitive cells and supporting tissues become damaged. Small deposits of material called drusen may accumulate beneath the retina.
Changes can develop slowly over several years. Some people have early disease without noticeable vision problems, while others gradually experience blurred central vision or difficulty seeing fine details. In advanced dry AMD, areas of retinal tissue may thin and deteriorate. This advanced form is known as geographic atrophy.
Dry AMD does not always progress to advanced disease. However, some people with dry AMD later develop wet AMD, which involves abnormal blood vessel growth and can cause more rapid damage.
Wet macular degeneration
Wet macular degeneration, also called neovascular AMD, occurs when abnormal blood vessels grow beneath or near the macula. These vessels can leak fluid or blood into the surrounding retinal tissues, damaging the cells needed for clear central vision.
Wet AMD is less common than dry AMD, but it can cause vision changes more quickly. Distorted central vision or a new blurred area may develop over a relatively short period. Early assessment is important because treatment can help limit further damage.
The U.S. National Library of Medicine's MedlinePlus explains that the dry and wet forms affect the macula in different ways and that treatment may slow vision loss, although it does not necessarily restore vision that has already been lost.
What symptoms can macular degeneration cause?
Early macular degeneration may not cause obvious symptoms, which is one reason regular eye examinations matter. As the condition develops, changes in central vision may become noticeable. The experience depends on the type of AMD, how much the macula is affected, and whether one or both eyes are involved.
Examples of visual changes that may occur include:
- Blurred vision when reading or looking at fine details.
- Straight lines appearing bent, wavy, or uneven.
- A blurry, blank, or dark area near the center of vision.
- Difficulty recognizing faces or seeing small objects clearly.
- Colors appearing less bright than usual.
- Needing more light to read or complete close-up tasks.
- Difficulty with activities such as reading, watching television, or driving.
These changes are examples of possible experiences, not a way to identify AMD without an examination. Other eye conditions can produce similar symptoms, and some people with early AMD have no symptoms at all.
If central vision becomes distorted or changes unexpectedly, arrange an eye examination promptly. NHS guidance on AMD symptoms advises urgent assessment when vision suddenly worsens. Sudden vision loss or a new shadow across the field of vision also warrants urgent eye care because other eye conditions may require immediate treatment.
What causes macular degeneration, and who is at risk?
The exact causes of age-related macular degeneration are not fully understood. Age-related changes in the retina interact with inherited and environmental factors. Having one or more risk factors does not mean a person will develop the condition, and AMD can occur even when no clear risk factor is identified.
Factors associated with a higher likelihood of developing AMD include:
- Increasing age: The condition is more common in older adults, particularly from the mid-50s onward.
- Family history: Having close relatives with AMD can increase a person's risk.
- Smoking: Smoking is an established risk factor, and stopping can help reduce avoidable risk.
- Ancestry: AMD is more common in people of European ancestry than in some other population groups.
- Cardiovascular health: High blood pressure and other health-related factors may contribute to risk.
Age is a major factor, but the condition is not an inevitable part of growing older. A person's family history, smoking history, overall health, and findings on an eye examination help an eye-care professional assess the individual situation.
How is macular degeneration diagnosed?
An eye-care professional can often identify signs of macular degeneration during a comprehensive eye examination, including when symptoms are absent. The assessment typically includes questions about changes in vision, medical and family history, and an examination of the retina.
Tests may include:
- Visual acuity testing: Measures how clearly a person can see letters or symbols at a set distance.
- Dilated retinal examination: Eye drops widen the pupils so the clinician can examine the retina and macula more clearly.
- Optical coherence tomography (OCT): Uses light to create detailed cross-sectional images of the retina, helping clinicians identify changes in its layers or fluid accumulation.
- Retinal photography or other imaging: Records the appearance of the retina and may help assess deposits, damaged areas, or abnormal blood vessels.
- Fluorescein angiography, when needed: Uses a dye injected into a vein and photographs of the retina to evaluate blood vessels and possible leakage.
Not everyone needs every test. The clinician selects the appropriate examinations according to the initial findings and whether dry or wet AMD is suspected.
The NHS guide to diagnosing AMD describes an examination of the back of the eye and explains that additional retinal scans may be needed. Results help determine the type of AMD, the extent of retinal changes, and whether treatment or ongoing monitoring is appropriate.
How is macular degeneration treated?
Treatment depends on the type of macular degeneration, the extent of retinal damage, and how the condition is affecting vision. Treatment is generally intended to slow further damage, preserve useful vision, or help people adapt to visual changes. It cannot reliably restore central vision that has already been permanently lost.
Managing dry macular degeneration
Early dry AMD is usually monitored rather than treated with an eye procedure. Regular examinations help the clinician follow retinal changes over time and identify any progression that may need additional care.
For certain people with intermediate AMD, a specific combination of vitamins and minerals known as the AREDS2 formula may reduce the risk of progression to advanced disease. It is not suitable for everyone and does not prevent early AMD from developing into intermediate AMD. Supplements should be discussed with an eye-care professional because their potential benefit depends on the person's retinal findings and medical circumstances.
The National Eye Institute's guidance on AREDS2 supplements explains that these formulations can help some people with intermediate AMD but are not useful for every stage of the condition.
For some people with advanced dry AMD, particularly geographic atrophy, medicines injected into the eye may be available to slow the enlargement of damaged retinal areas. These treatments do not rebuild tissue that has already been lost. Suitability, possible risks, access, and expected benefits should be discussed with a retinal specialist.
Treating wet macular degeneration
Wet AMD is commonly treated with injections of medicines called anti-vascular endothelial growth factor (anti-VEGF) drugs. These medicines reduce the activity of a protein that promotes abnormal blood vessel growth. By limiting leakage and abnormal vessel activity, treatment can help preserve vision and, in some cases, improve it.
Injections are given into the eye by an eye specialist after the area has been prepared with antiseptic and numbing medicine. Several injections are often needed, especially at the beginning, followed by an individualized schedule based on the response to treatment and follow-up examinations.
Photodynamic therapy, which combines a light-sensitive medicine with a specific laser treatment, may be used in selected cases. It is less commonly used than anti-VEGF injections for wet AMD.
The National Eye Institute's information on wet AMD treatments describes anti-VEGF injections and photodynamic therapy as options that can help slow or stop further vision loss in appropriate cases.
Can you reduce the risk of macular degeneration?
There is no guaranteed way to prevent age-related macular degeneration. However, certain habits may help reduce risk or support eye health. These measures are useful even though they cannot eliminate the effects of aging or inherited susceptibility.
- Avoid smoking: If you smoke, seek support to stop. Avoid starting if you do not smoke.
- Eat a balanced diet: Include a variety of vegetables, leafy greens, fruits, and other nutrient-rich foods. Fish can also be part of a balanced eating pattern.
- Stay physically active: Regular activity supports general health and cardiovascular well-being.
- Manage blood pressure and cholesterol: Work with a healthcare professional to monitor and manage these factors when needed.
- Attend comprehensive eye examinations: Ask an eye-care professional how often examinations are appropriate, particularly with increasing age or a family history of AMD.
Do not start high-dose eye supplements solely because of age or a concern about macular degeneration. The evidence for AREDS2 applies to specific groups with AMD, and these products are not a replacement for eye examinations or individualized care.
What is daily life like with macular degeneration?
Many people with early AMD continue their usual activities without major difficulty. When central vision becomes impaired, reading, recognizing faces, managing small objects, and driving may become more challenging. The effect on daily life depends on the extent of vision loss, whether one or both eyes are affected, and the person's usual activities.
Practical adjustments can make tasks easier. Brighter task lighting, larger-print books, screen magnification, high-contrast displays, and electronic reading tools may help with close-up work. People with more substantial vision loss may benefit from low-vision assessment and rehabilitation services that teach techniques for maintaining safety and independence.
Driving deserves particular attention when central vision changes. An eye-care professional can assess whether vision meets the relevant driving requirements and discuss alternatives if necessary. A diagnosis does not automatically mean that every person must stop driving, but new or worsening visual problems should be assessed before continuing activities that depend on clear sight.
Follow-up appointments remain important even when vision seems stable. If vision suddenly changes between scheduled visits, contact an eye-care professional urgently rather than waiting for the next routine examination.