OCT For Macular Degeneration: Wet Vs Dry Explained

Nish Fofaria • 19 July 2024

Key Takeaways

  • OCT (Optical Coherence Tomography) is a non-invasive imaging test that detects macular degeneration early.
  • There are two types of macular degeneration: wet and dry.
  • Wet macular degeneration is caused by abnormal blood vessel growth, while dry AMD is characterized by drusen deposits.
  • The REVO-OCT Wellness Scan employs AI technology to enhance the accuracy of OCT scans.
  • Regular OCT scans, such as those offered by Eyecare Opticians, help with monitoring the progression of AMD and adjust treatments accordingly.


Eyecare Opticians: Your Local Vision Care Experts


Discover quality vision care at Eyecare Opticians in Ham, Kingston Upon Thames. 


Led by Consultant Optometrist Nish, with over two decades of diverse optometric experience, we offer cutting-edge eye care solutions tailored to your needs.


Our services include advanced diagnostic tests like Retinal Photography Optomap and Optical Coherence Tomography, alongside specialized treatments for Myopia control and Dry Eyes. Rated 4.9 stars on Google, we're committed to exceeding patient expectations with the latest equipment and personalized care.


Schedule your comprehensive eye exam today!


Introduction to OCT for Macular Degeneration

Macular degeneration is a serious eye condition that can lead to vision loss if not detected early. Fortunately, advances in technology like Optical Coherence Tomography (OCT) have made it easier to diagnose and manage this condition. 


OCT is a non-invasive imaging test that utilizes light waves to take cross-sectional pictures of the retina, enabling eye doctors to see each of its distinctive layers and map and measure their thickness. These measurements help with diagnosis and provide treatment guidance for glaucoma and diseases of the retina, such as macular degeneration and diabetic eye disease.


The Importance of OCT in Eye Health

OCT allows optometrists to detect eye conditions like macular degeneration early, often before symptoms appear - early detection means early treatment, which can slow or even stop the progression of the disease. This is particularly important for AMD, which can lead to severe vision loss if left untreated.


  • non-invasive and quick
  • provides detailed images of the retina
  • helps in early detection and monitoring of eye diseases


What is Macular Degeneration?

Macular degeneration, often referred to as age-related macular degeneration (AMD), is a common eye condition among people aged 50 and older. It causes damage to the macula - a small spot near the center of the retina that is responsible for sharp, central vision, needed for activities like reading and driving.

Wet Macular Degeneration


Definition and Key Characteristics

Wet macular degeneration, also known as neovascular AMD, is the less common but more severe form of age-related macular degeneration. It occurs when abnormal blood vessels grow under the retina and macula. These blood vessels can leak fluid or blood, leading to rapid and severe vision loss.


Formation of Abnormal Blood Vessels

In wet AMD, the formation of abnormal blood vessels is called choroidal neovascularization (CNV) - these new blood vessels are fragile and can cause the macula to lift from its normal position. This distorts vision and can lead to the formation of scar tissue, further deteriorating sight.


Symptoms of Wet AMD

Wet AMD symptoms can appear suddenly and worsen quickly. Key signs to look out for include:


  • Visual distortions, such as straight lines appearing wavy
  • Reduced central vision in one or both eyes
  • A well-defined blurry spot or blind spot in your field of vision
  • Colors appearing less bright


Risks and Progression of Wet AMD

Wet AMD progresses rapidly and can cause significant vision loss within a short period. Risk factors include age, genetics, smoking, high blood pressure, and obesity. If left untreated, wet AMD can lead to permanent central vision loss.


Treatment Options for Wet AMD

While there is no cure for wet AMD, several treatments can help slow its progression and preserve vision:


  • Anti-VEGF Injections: These medications inhibit the growth of abnormal blood vessels.
  • Photodynamic Therapy: A two-step treatment that uses a light-activated drug to destroy abnormal blood vessels.
  • Laser Surgery: A high-energy laser is used to seal off leaking blood vessels.


Dry Macular Degeneration


Definition and Key Characteristics

Dry macular degeneration is the more common form of AMD, accounting for about 80-90% of cases. It progresses more slowly than wet AMD and occurs when the macula thins over time as part of the aging process, leading to gradual vision loss.


Presence of Drusen Deposits

An early sign of dry AMD is the presence of drusen - yellow deposits under the retina. While small amounts of drusen may not cause vision problems, larger and more numerous drusen increase the risk of developing advanced AMD.


  • Small drusen: Generally do not affect vision.
  • Intermediate drusen: May cause some vision changes.
  • Large drusen: Significantly increase the risk of vision loss.


Symptoms of Dry AMD

Symptoms of dry AMD develop gradually and can include:


  • Blurriness in the center of your vision
  • Difficulty recognizing faces
  • Need for brighter light when reading or doing close-up work
  • Colors appearing less vivid


Risks and Progression of Dry AMD

  • Age: Most common in people over 60.
  • Genetics: Family history increases risk.
  • Lifestyle: Smoking and poor diet can contribute to AMD.


Dry AMD progresses in three stages: early, intermediate, and late. Early detection through regular eye exams is crucial to manage the disease effectively.


Treatment Options for Dry AMD

While there is no cure for dry AMD, certain measures can help slow its progression and preserve vision:


  • AREDS Supplements: High-dose vitamins and minerals can reduce the risk of advanced AMD.
  • Healthy Diet: Consuming leafy greens, fish, and nuts can support eye health.
  • Regular Eye Exams: Monitoring changes in your vision helps catch progression early.


Role of OCT in Diagnosing Macular Degeneration

OCT plays a crucial role in diagnosing and managing both wet and dry macular degeneration - the technology provides detailed images of the retina, allowing eye doctors to detect early signs of AMD and monitor its progression.


Benefits of Using OCT in Eye Examinations

  • Early detection of retinal diseases
  • Accurate measurement of retinal thickness
  • Non-invasive and painless procedure
  • Quick and efficient imaging


OCT Imaging in Wet AMD

In wet AMD, OCT can detect fluid or blood under the retina, indicating the presence of abnormal blood vessels. The device also monitors the effectiveness of treatments like anti-VEGF injections, allowing doctors to adjust the treatment plan as needed.


Managing Macular Degeneration with OCT

Managing macular degeneration effectively requires regular monitoring and timely adjustments to treatment plans, and OCT plays a pivotal role in this ongoing process. By rendering detailed images of the retina, OCT helps eye doctors track the progression of the disease and make informed decisions about treatment.


For instance, in wet AMD, the presence of fluid or blood detected by OCT may indicate the need for more frequent anti-VEGF injections.

Regular Eye Check-Ups: What to Expect

Here's what you can expect during a regular eye check-up:


  • Review of your medical history and any changes in your vision
  • Comprehensive eye examination, including visual acuity and retinal imaging
  • Discussion of OCT scan results and any necessary adjustments to your treatment plan
  • Recommendations for lifestyle changes or supplements to support eye health


Choose Eyecare Opticians for Age-Related Macular Degeneration Control

At Eyecare Opticians, we are committed to providing the highest level of care for patients with age-related macular degeneration. Our state-of-the-art REVO-OCT Wellness Scan uses AI-powered technologies like denoising and motion correction to enhance the quality and reliability of OCT scans. As such, we can detect macular degeneration early and monitor its progression with unparalleled accuracy.


Our experienced team of eye care professionals is dedicated to helping you preserve your vision and maintain your quality of life. We offer personalized treatment plans tailored to your specific needs and regular follow-up appointments to ensure that your condition is managed effectively.


Contact us to learn more about how to preserve your vision and manage macular degeneration effectively with advanced diagnostic tools and personalized treatment plans at Eyecare Opticians.


Frequently Asked Questions (FAQ)


What is the primary difference between wet and dry macular degeneration?

Wet AMD involves the growth of abnormal blood vessels under the retina, leading to rapid vision loss. Dry AMD, on the other hand, is characterized by the gradual thinning of the macula and the presence of drusen deposits, resulting in slower vision loss.


Can OCT detect early signs of macular degeneration?

Yes, OCT can detect early signs of macular degeneration - by providing detailed images of the retina, OCT can reveal changes in the retinal layers and the presence of drusen deposits, which are early indicators of AMD. Early detection through OCT allows for timely intervention and better management of the condition.


Is there a cure for macular degeneration?

Currently, there is no cure for macular degeneration; however, several treatments can help slow its progression and preserve vision. These include anti-VEGF injections for wet AMD and AREDS supplements for dry AMD. Regular eye check-ups and a healthy lifestyle can also help manage the condition.


How often should one get an OCT scan?

The frequency of OCT scans depends on the individual's risk factors and the stage of macular degeneration. 

For those at risk or diagnosed with AMD, it is generally recommended to have an OCT scan at least once a year. 

However, your eye doctor may recommend more frequent scans based on your specific condition and treatment plan - contact us at Eyecare Opticians and we’ll be happy to help with a personalised eyecare plan!


Can lifestyle changes help manage macular degeneration symptoms?

Yes, lifestyle changes can help manage macular degeneration symptoms and slow its progression. Some recommendations include:


  • Eating a diet rich in leafy greens, fish, and nuts
  • Taking AREDS supplements as recommended by your doctor
  • Quitting smoking
  • Maintaining a healthy weight and blood pressure
  • Protecting your eyes from UV light by wearing sunglasses


By making these changes, you can support your eye health and reduce the risk of worsening macular degeneration.

by Nish Fofaria 22 February 2026
by Nish Fofaria 18 February 2026
by Nish Fofaria 18 February 2026
Myopia (short-sightedness) is increasing at an alarming rate worldwide. Children are developing myopia at younger ages, and prescriptions are progressing faster than ever before. But what if you could predict how your child’s eyesight may change — and take action early? At Eyecare Opticians, we are proud to introduce our Myopia Control Prediction Calculator, an advanced clinical tool designed to help pares understand potential vision progression and make informed decisions about treatment. 👉 Use the calculator now: https://www.eyecareopticians.com/specialist-services Because when it comes to myopia, early understanding leads to better long-term outcomes. What Is the Myopia Control Prediction Calculator? The Myopia Control Prediction Calculator is a clinically informed tool that estimates how a child’s prescription could progress over time using key risk indicators. 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Our calculator is grounded in clinical insight and reflects the way modern myopia management is practiced. It helps parents: Understand possible future prescription ranges See the potential impact of delaying treatment Explore how myopia control can slow progression Make confident, informed decisions For many families, the greatest benefit is clarity. No guessing. No waiting for the next prescription increase. Just proactive, expert-led care. How Do Myopia Control Treatments Work? Modern myopia management focuses on slowing the growth of the eye rather than simply correcting blurred vision. A range of evidence-based treatments are available, each working in different ways: Specialist contact lenses create peripheral retinal signals that help reduce the stimulus for eye growth. Orthokeratology (overnight lenses) gently reshape the front surface of the eye during sleep, allowing clear daytime vision while helping to slow eye elongation. Myopia control spectacle lenses use advanced optical designs to influence how light focuses across the retina. Low-dose atropine eye drops may be recommended in certain cases to further help regulate eye growth. Every child is unique, which is why treatment recommendations are always tailored to the individual rather than adopting a one-size-fits-all approach. Why Combination Therapy Often Delivers Better Outcomes Some children respond extremely well to a single treatment. Others — particularly those at higher risk of progression — benefit from a more advanced strategy. Using a combination of therapies allows us to influence myopia progression through multiple mechanisms. For example, optical treatments may be paired with low-dose atropine to create a stronger overall management effect. This layered, proactive approach aims not just to manage myopia, but to significantly reduce the likelihood of high prescriptions in adulthood. 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During this appointment we: Perform advanced clinical measurements, including axial length Assess progression risk Discuss suitable treatment options Build a personalised management plan Our goal is simple: To help protect your child’s vision for decades to come. Try the Myopia Control Prediction Calculator Today Your child’s future eyesight is too important to leave to chance. Take just one minute to gain clarity and confidence about their visual future. 👉 Click below to use the calculator: https://www.eyecareopticians.com/specialist-services Small action today can create a meaningful difference tomorrow.