Understanding Macular Degeneration
Age-related macular degeneration, often called AMD, is a condition that affects the macula, which is the central part of the retina responsible for sharp, detailed vision. The macula allows you to read, recognize faces, drive, and perform other tasks that require fine central vision. When the macula deteriorates, these everyday activities become increasingly difficult. Age-related macular degeneration affects more than 11 million people in the United States (BrightFocus Foundation, 2023), making it one of the leading causes of vision loss among adults over the age of 50.
AMD comes in two distinct forms: dry and wet. While both types affect the macula, they differ significantly in how they develop, how quickly they progress, and what treatment options are available. Understanding the differences between these two forms is an important step in protecting your vision and making informed decisions about your eye care.
The macula is a small, oval-shaped area near the center of the retina. It is packed with millions of light-sensing cells called photoreceptors, which convert light into electrical signals sent to the brain. The macula is responsible for your central vision, the area of your visual field that you use when looking directly at something. Peripheral vision, which allows you to see objects to the side, is handled by other parts of the retina and is typically not affected by AMD.
Several factors can increase your likelihood of developing macular degeneration. Age is the most significant risk factor, with the condition becoming more common after age 55. Family history also plays a role. If a close relative has been diagnosed with AMD, your own risk may be higher.
- Smoking significantly increases the risk of developing AMD and can accelerate its progression
- Cardiovascular disease, high blood pressure, and high cholesterol are associated with a greater likelihood of AMD
- Prolonged exposure to ultraviolet light without adequate eye protection may contribute to retinal damage over time
- Individuals with lighter skin and eye color may face a slightly higher risk
- A diet low in leafy greens, fish, and other nutrient-rich foods has been linked to increased AMD risk
Who Should Be Evaluated for Macular Degeneration
If you are in your fifties or older and have noticed changes in your central vision, scheduling a comprehensive retinal evaluation is an important step. Common early symptoms include difficulty reading small print, blurriness when looking at faces, or a need for brighter light when performing close-up tasks. These changes can develop gradually, so they may be easy to dismiss at first.
People who have a parent, sibling, or other close relative with macular degeneration should consider regular retinal screenings even if they are not yet experiencing symptoms. Early detection is one of the most effective tools for managing AMD and preserving as much vision as possible.
If you have been diagnosed with dry macular degeneration, monitoring is essential because dry AMD can progress to the wet form. Your retina care team at Washington Eye Institute can help track any changes in your condition and act quickly if signs of wet AMD appear. Routine dilated eye exams and retinal imaging play a critical role in catching progression early.
Those who smoke, have high blood pressure, or carry other cardiovascular risk factors should be particularly attentive to their retinal health. Because the blood vessels that supply the retina are part of the broader vascular system, conditions that affect circulation throughout the body can also affect the delicate tissues of the macula.
How Macular Degeneration Develops
Dry macular degeneration is the more common form of AMD, accounting for the large majority of all cases. It develops when small yellow deposits called drusen accumulate beneath the retina. In the early stages, these drusen may be small and cause no noticeable symptoms. As the condition progresses, the drusen grow larger and more numerous, and the light-sensitive cells in the macula begin to thin and break down.
Dry AMD typically progresses through three stages: early, intermediate, and advanced. In the early stage, most people have no symptoms and the condition is detected only through a dilated eye exam. In the intermediate stage, some people begin to notice mild blurriness or difficulty seeing in low light. In the advanced stage, known as geographic atrophy, significant areas of the macula have deteriorated, leading to noticeable central vision loss.
Wet macular degeneration occurs when abnormal blood vessels grow beneath the retina in a process called choroidal neovascularization. These new blood vessels are fragile and prone to leaking fluid and blood into the macula. This leakage causes swelling and damage to the macula, which can lead to rapid and significant vision loss if left untreated.
Wet AMD can develop in eyes that previously had dry AMD, or it can appear as the first sign of macular degeneration. Unlike dry AMD, which tends to progress slowly over years, wet AMD can cause noticeable vision changes within days or weeks. This is why prompt evaluation and treatment are so important.
The primary difference between the two forms lies in the presence of abnormal blood vessel growth. Dry AMD involves the gradual thinning and breakdown of the macula without new blood vessel formation. Wet AMD involves the growth of leaky, abnormal blood vessels beneath the retina. Both types affect central vision, but wet AMD tends to cause more rapid and severe vision loss.
- Dry AMD progresses slowly over months to years, while wet AMD can cause changes within days to weeks
- Dry AMD is characterized by drusen deposits, while wet AMD is characterized by abnormal blood vessel growth and fluid leakage
- Dry AMD is more common, but wet AMD accounts for a larger proportion of severe vision loss from the disease
- Dry AMD may progress to wet AMD at any stage, making regular monitoring essential
Types and Stages of Macular Degeneration
In early dry AMD, medium-sized drusen are present beneath the retina, but vision is typically unaffected. Most people with early dry AMD do not know they have the condition unless it is detected during a routine eye exam. No treatment is required at this stage, but regular monitoring helps track any changes. Lifestyle modifications such as quitting smoking, eating a nutrient-rich diet, and protecting your eyes from ultraviolet light can support overall retinal health.
At the intermediate stage, drusen are larger and there may be pigment changes in the retina. Some patients begin to notice mild symptoms such as blurriness, difficulty adapting to low light, or a slight distortion in their central vision. Nutritional supplementation, based on formulations studied in clinical research, may be recommended by your care team to help slow progression. An Amsler grid, a simple tool you can use at home, can help you monitor your central vision for any new distortions.
Geographic atrophy represents the advanced stage of dry AMD. In this stage, large areas of the macula have deteriorated, causing a defined area of central vision loss. Patients may notice a blank or dark spot in the center of their vision, making it difficult to read, recognize faces, or perform other tasks that require detailed central sight. Peripheral vision typically remains intact. Newer treatment options for geographic atrophy have become available, and your retina care team can discuss whether these may be appropriate for your situation.
Wet AMD does not follow the same staged progression as dry AMD. It can emerge at any point, sometimes from eyes that were previously diagnosed with dry AMD and sometimes as the initial presentation. The hallmark of wet AMD is the growth of abnormal blood vessels beneath the retina, which leak fluid and blood. Symptoms often appear suddenly and can include distorted vision (straight lines appearing wavy), a dark or empty area in the center of your vision, or a rapid decrease in visual sharpness.
It is possible to have both wet and dry AMD in the same eye or to have different forms in each eye. One eye may have early dry AMD while the other develops wet AMD. This is one reason why both eyes are carefully evaluated during each visit, even if symptoms are present in only one eye. Your care team will develop a monitoring and treatment plan that addresses the needs of each eye individually.
What to Expect During Evaluation and Treatment
Evaluating macular degeneration involves several advanced imaging techniques that allow your care team to examine the layers of the retina in detail. Optical coherence tomography, commonly referred to as OCT, creates cross-sectional images of the retina that reveal the presence of fluid, drusen, or thinning of the retinal layers. Fluorescein angiography may also be used, which involves a special dye that highlights the blood vessels in the retina and can reveal any abnormal blood vessel growth or leakage.
These imaging tools are painless and are performed in the office. They provide critical information that helps your care team determine whether you have dry AMD, wet AMD, or a combination of both, and they guide treatment decisions.
For early and intermediate dry AMD, the primary approach focuses on monitoring and risk reduction. Your care team may recommend specific nutritional supplements formulated for eye health, based on findings from major clinical studies. Lifestyle changes, including a diet rich in dark leafy greens, fish, and other foods high in omega-3 fatty acids and antioxidants, can support retinal health. Regular follow-up appointments with retinal imaging allow your care team to detect any progression promptly.
For advanced dry AMD with geographic atrophy, newer treatments have been developed that may help slow the rate of retinal cell loss. Your retina specialist at Washington Eye Institute can discuss these options with you and determine whether you may benefit from them.
Wet AMD is treated with injections of medication directly into the eye, a procedure known as intravitreal injection. These medications belong to a class called anti-VEGF agents, which work by blocking a protein called vascular endothelial growth factor. This protein promotes the growth of the abnormal blood vessels that cause wet AMD. By blocking VEGF, these medications can reduce fluid leakage, slow the growth of abnormal vessels, and in many cases help stabilize or improve vision.
Intravitreal injections are performed in the office under sterile conditions. The eye is numbed with anesthetic drops before the procedure, and most patients report minimal discomfort. Treatment typically begins with a series of injections given at regular intervals, followed by ongoing monitoring to determine whether additional treatments are needed. Many patients require ongoing injections over months or years to maintain the benefits of treatment.
Between appointments, your care team may ask you to use an Amsler grid at home. This simple chart, which features a grid of straight lines with a central dot, can help you detect new distortions or blank spots in your central vision. If you notice any changes while using the Amsler grid, contact Washington Eye Institute promptly, as sudden changes could indicate progression from dry to wet AMD or worsening of existing wet AMD.
Your Journey with Macular Degeneration
Your journey begins with a comprehensive evaluation at one of our retina locations in Greenbelt, Rockville, or Cumberland. During this visit, your care team will review your medical and ocular history, measure your visual acuity, and perform dilated eye exams along with advanced retinal imaging. This thorough assessment provides the information needed to determine the type and stage of any macular degeneration present.
Based on the results of your evaluation, your retina care team will discuss their findings with you and develop a personalized care plan. For dry AMD, this may involve scheduled monitoring visits, nutritional guidance, and lifestyle recommendations. For wet AMD, your plan will include a treatment schedule for intravitreal injections along with regular imaging to track your response to treatment. Your care team will explain what to expect at each step and answer any questions you have.
Macular degeneration is a condition that requires long-term management. Regular visits allow your care team to monitor the health of your retina, detect any progression, and adjust your treatment plan as needed. Many patients with dry AMD remain stable for years with appropriate monitoring and lifestyle modifications. Patients receiving treatment for wet AMD often see significant benefits from consistent adherence to their injection schedule.
Washington Eye Institute is committed to supporting you throughout this process. Our retina teams in Greenbelt, Rockville, and Cumberland are equipped to provide the ongoing care and monitoring that effective AMD management requires. Open communication with your care team about any changes in your vision helps ensure that adjustments to your care plan can be made promptly.
A diagnosis of macular degeneration does not mean losing all of your vision. Peripheral vision is typically preserved, and with appropriate management, many patients maintain functional vision for daily activities. Low vision aids, including magnifying devices and specialized lighting, can help you continue reading, cooking, and engaging in hobbies. Your care team can connect you with low vision resources and rehabilitation services to help you adapt and maintain your quality of life.
Frequently Asked Questions
Yes, dry AMD can progress to wet AMD. This transition can happen at any stage of dry AMD, which is why regular retinal exams and monitoring are so important. If you have been diagnosed with dry AMD, your care team will establish a monitoring schedule to detect any early signs of wet AMD. Using an Amsler grid at home between visits can help you notice sudden changes in your vision that may indicate this transition.
While there is no method to completely prevent AMD, certain steps can reduce your risk and may help slow its progression. Quitting smoking is one of the most impactful steps you can take. Eating a diet rich in leafy greens, fish, and colorful fruits and vegetables provides nutrients that support retinal health. Maintaining a healthy weight, managing blood pressure and cholesterol, exercising regularly, and wearing sunglasses that block ultraviolet light are all beneficial habits for long-term eye health.
AMD primarily affects central vision. In the early stages, you might notice that straight lines appear wavy or distorted. As the condition advances, a blurry or dark area may develop in the center of your visual field. You may find it harder to read, recognize faces, or see fine details. Peripheral vision, the area around the edges of your visual field, typically remains intact. This means that even with advanced AMD, most people retain the ability to navigate their surroundings and maintain a degree of independence.
Most patients are understandably apprehensive about eye injections, but the procedure is well tolerated. Before the injection, numbing drops are applied to the eye to minimize discomfort. The injection itself takes only a few seconds. Many patients describe feeling pressure rather than pain. Some mild soreness or irritation may occur afterward, but this typically resolves within a day or two. Your care team will discuss what to expect before your first treatment so you feel prepared.
The frequency of your visits depends on the type and stage of your macular degeneration. Patients with early dry AMD may need retinal imaging once or twice per year. Those with intermediate or advanced dry AMD may be seen more frequently. Patients receiving injections for wet AMD typically start with monthly visits and may transition to a less frequent schedule based on their response to treatment. Your care team will tailor your appointment schedule to your specific needs and adjust it over time as your condition is monitored.
Washington Eye Institute offers retina services at our Greenbelt, Rockville, and Cumberland locations. Each office is equipped to perform comprehensive retinal evaluations and administer treatments for macular degeneration. You are welcome to schedule your appointment at whichever location is most convenient for you. If you are unsure which location best fits your needs, our team can help you determine the best option when you call to schedule your visit.