“Dr Schwartz and his team provide first rate care. I have wet AMD in both eyes and I depend on these folks to protect my eyesight -- and they do!!”
How OCT Imaging Detects Wet AMD Early
What OCT Imaging Is and How It Works
OCT is a non-invasive imaging technology that allows our team to look inside the layers of your retina with remarkable detail. Understanding what this technology does helps explain why it has become the standard of care for detecting and managing wet AMD.
OCT uses safe infrared light beams to create highly detailed, cross-sectional images of the retina. The device sends light into the eye and measures how it reflects back from each retinal layer. A computer assembles these measurements into precise images that reveal the thickness and structure of the retina in a way no standard eye exam can match.
A traditional eye exam or retinal photograph shows only the surface of the retina. OCT goes deeper, capturing all the individual retinal layers in detail. It can measure retinal thickness with high precision and identify fluid that has collected between or beneath those layers.
Fluid hiding beneath the retinal surface is one of the earliest signs of wet AMD. OCT shows this fluid as dark, swollen spaces between the normally tight retinal layers, even when the amount is too small to affect your vision or appear on a standard photograph.
An OCT scan is quick, comfortable, and involves no contact with the eye. You simply sit in front of the OCT machine, rest your chin on a support, and look at a small target while the machine scans your eye. There are no flashes and no discomfort. Your pupils may be dilated beforehand to give our team a better view, but the scan itself takes only a few minutes. Results are available immediately for review.
Who Should Have OCT Screening
While OCT is beneficial for many patients with eye concerns, certain groups are at higher risk for wet AMD and benefit most from regular OCT monitoring. Knowing whether you fall into a higher-risk category helps guide how frequently you should be seen.
Several factors are associated with a greater risk of developing wet AMD. Our team uses this information to create individualized monitoring plans.
- Age 65 or older, with risk increasing significantly in later decades
- A diagnosis of dry AMD, particularly with large drusen or changes to the retinal pigment epithelium (RPE, the support layer beneath the retina)
- Advanced AMD already present in one eye
- A family history of macular degeneration
- Smoking, which is one of the strongest modifiable risk factors
People who already have dry AMD in one or both eyes face an ongoing risk of converting to wet AMD. The process of conversion, when abnormal vessels begin to grow and leak, can happen without warning. Regular OCT monitoring allows our retina specialists to catch this change at its earliest point, before active leakage causes lasting damage.
For patients with dry AMD in one eye, monitoring the other eye closely is especially important, as the risk of conversion in the second eye remains significant over time.
The right monitoring frequency depends on your individual risk level and your retina specialist's findings. Patients diagnosed with dry AMD may need OCT scans every few months to watch for early signs of conversion. Patients at lower risk may only need annual imaging as part of a comprehensive dilated eye exam.
Our team will recommend a schedule based on your specific scan results and overall eye health.
How OCT Detects Wet AMD at Its Earliest Stage
The ability to identify wet AMD before symptoms appear is what makes OCT so valuable. Our retina specialists use several specific OCT findings to catch the disease in its earliest and most treatable form.
One of the first signs of wet AMD is fluid accumulating in or beneath the retina. OCT can detect fluid at three different levels: within the retinal layers themselves (intraretinal fluid), just beneath the retina (subretinal fluid), and beneath the retinal pigment epithelium (sub-RPE fluid). Fluid at any of these levels suggests active wet AMD.
Because OCT is so sensitive, it can identify these changes weeks or months before you would notice any difference in your vision. This early warning is what makes prompt treatment possible.
OCT can also reveal the formation of choroidal neovascular membranes, which are the abnormal blood vessels responsible for wet AMD. These membranes appear as irregular thickening beneath the retina on OCT images. Identifying them early, sometimes even before they have begun to leak, gives our team an important head start on planning treatment.
One of the greatest strengths of OCT is the ability to compare images from different visits side by side. Our retina specialists can overlay your current scan with earlier scans to measure even very small changes in retinal thickness or detect new areas of fluid. This comparison helps determine whether the disease is stable, responding to treatment, or beginning to worsen. It also guides decisions about how frequently treatment is needed.
At Atlantic Retina Center, we perform serial retinal photo comparisons at every visit as a standard part of how we track disease over time.
What Happens After OCT Finds Signs of Wet AMD
When OCT reveals signs of wet AMD, the next steps happen quickly. Our team is trained to move from detection to diagnosis to treatment without delay, giving you the best opportunity to protect your vision.
If your OCT scan shows fluid or abnormal blood vessel growth, additional imaging may be ordered to confirm the diagnosis and guide treatment planning. Fluorescein angiography uses a safe dye injected into the arm to photograph blood flow in the retina, showing exactly where vessels are leaking. OCT angiography is a newer technique that maps blood flow in the retina without dye. Together, these tools provide a complete picture of the disease.
The primary treatment for wet AMD is anti-VEGF therapy. VEGF stands for vascular endothelial growth factor, a protein that drives the growth of abnormal blood vessels. Anti-VEGF medications are injected directly into the eye, a procedure called an intravitreal injection, to block this protein, reduce leakage, and help stabilize or improve vision.
Several anti-VEGF options are available, and our team selects the most appropriate choice based on your individual situation.
- Avastin (bevacizumab), used off-label for wet AMD
- Lucentis (ranibizumab), one of the earlier anti-VEGF medications approved for wet AMD
- Eylea (aflibercept), given on an individualized injection schedule
- Vabysmo (faricimab), a newer bispecific antibody that targets two pathways involved in abnormal vessel growth
Your retina specialist will discuss which option is most appropriate for your diagnosis and help you understand what to expect throughout treatment.
After treatment begins, OCT becomes the primary tool for monitoring how well the medication is working. Our team performs OCT scans at each visit to check whether fluid has decreased, stabilized, or returned. Many retina specialists use a treat-and-extend approach, gradually increasing the time between injections as long as the wet AMD remains controlled. OCT results at each visit guide these decisions and help find the safest interval between treatments.
Living with a Wet AMD Diagnosis
Managing wet AMD is an ongoing process that extends beyond clinic visits. There are practical steps you can take at home and lifestyle choices that support your eye health between appointments.
An Amsler grid is a simple tool that looks like graph paper with a dot in the center. By covering one eye at a time and looking at the central dot, you can watch for wavy lines, missing patches, or blank spots in your vision. If you notice any of these changes, contact your retina specialist promptly.
Home monitoring does not replace OCT scanning but serves as a useful early-warning supplement between visits.
While treatment is essential for managing wet AMD, certain lifestyle habits may help support overall retinal health over time.
- Stopping smoking, as smoking is one of the strongest risk factors for AMD progression
- Eating a diet rich in leafy greens, fish, and colorful fruits and vegetables
- Maintaining a healthy weight and staying physically active
- Wearing sunglasses that block ultraviolet light
- Taking AREDS or AREDS2 supplements if recommended by your retina specialist
Our team can help you understand which supplements and lifestyle changes are appropriate for your specific stage of AMD.
A wet AMD diagnosis can feel overwhelming, and it is completely normal to have concerns about your vision and independence. Many patients benefit from connecting with low-vision rehabilitation services or support groups. Your retina specialist can point you toward resources designed to help you adapt to any vision changes and maintain your quality of life.
When to See a Retina Specialist
Knowing when to seek care urgently, and when to schedule routine monitoring, is an important part of protecting your vision. Some symptoms require immediate attention, while others call for scheduled evaluation.
Some changes in vision should not wait for a routine appointment. Contact our office right away or seek urgent care if you experience any of the following.
- A sudden increase in floaters or a shower of new floaters
- Flashes of light in your vision
- A curtain, shadow, or dark area appearing over part of your visual field
- Sudden loss of vision in one eye
- New wavy or distorted vision, especially straight lines that suddenly appear bent
- A dark or blank spot in the center of your vision
Even without any symptoms, regular eye care that includes OCT imaging is essential if you are at risk for wet AMD. If you are over 65, have a family history of AMD, smoke or have smoked, or have already been diagnosed with dry AMD, speak with your eye care provider about incorporating OCT into your routine exams.
When early signs of AMD are found, a referral to a retina specialist for closer monitoring is the right next step. Early detection through OCT remains one of the most effective ways to preserve your vision.
Frequently Asked Questions
These answers address common questions about OCT, wet AMD monitoring, and what to expect when navigating diagnosis and treatment.
Yes. OCT uses infrared light, not radiation, and involves no contact with the eye. There is no cumulative risk from repeated scans, which means your retina specialist can order them as frequently as your condition requires. During active treatment, scans may be performed at every visit. During stable periods, the interval may stretch to several months. The scan carries no risk and can be repeated indefinitely.
This is one of the most important advantages of OCT. The test can identify tiny amounts of fluid beneath the retinal layers or early abnormal blood vessel growth before these changes cause any noticeable effect on your vision. For people at high risk, this pre-symptomatic detection window is critical, because treatment started before vision changes occur tends to produce better outcomes than treatment started after damage has already set in.
In most cases, yes. When OCT reveals active fluid from abnormal blood vessels, prompt treatment is recommended to stop further damage. Treatment usually begins with a series of monthly injections called a loading phase, which helps bring the disease under control. Beginning treatment early, before significant vision loss has occurred, gives you the best chance of maintaining your current level of sight. Your retina specialist will build a personalized treatment plan based on your specific OCT findings.
Standard OCT creates detailed images of retinal structure and can detect fluid, but it does not show blood flow. OCT angiography (OCTA) is an advanced version of the same technology that maps blood flow within the retina and choroid (the vascular layer beneath the retina) without requiring any injected dye. OCTA is particularly useful for visualizing abnormal blood vessel networks in wet AMD. Our team may use both together to get a complete picture of the disease.
Wet AMD is a chronic condition, and ongoing OCT monitoring is a standard part of long-term care. Even when the disease appears to be stable or well-controlled, regular scans remain important because wet AMD can reactivate after periods of quiet. The frequency of scans may decrease over time if your condition stays stable, but lifelong monitoring is generally recommended to catch any reactivation early and respond quickly.
Not necessarily, but the risk for the second eye is meaningfully higher than in someone without any AMD. Your retina specialist will monitor both eyes closely, even if one currently shows only dry AMD or no AMD at all. Regular OCT of the unaffected eye is part of a thorough monitoring strategy. Early detection in a second eye, if conversion does occur, follows the same principle: catching it before symptoms appear gives you the best chance of preserving vision in that eye as well.
See Our Team for Expert Retinal Care
Our fellowship-trained, ABO board-certified retina specialists are dedicated exclusively to the health of the retina, vitreous, and macula, bringing focused expertise to every patient we care for across the Eastern Shore of Maryland and central and southern Delaware. If you have been diagnosed with AMD, are at risk for wet AMD, or are noticing changes in your central vision, we encourage you to schedule an evaluation at Atlantic Retina Center. Early detection through OCT imaging is one of the most powerful steps you can take to protect your sight, and our team is here to guide you every step of the way.