Optical Coherence Tomography – The transformative technology to image and assess eye structure and health by Dr. Jeff Sciberras, O.D.
👁️ What Is an OCT Scan — And Why It’s Changing the Way We Detect Eye Disease
(With Real Patient Examples)
If you’ve ever had a routine eye exam and your optometrist recommended an OCT scan, you might have wondered:
What exactly is it? And do I really need it if I’m not having symptoms?
At our clinic, we believe in using the latest technology to protect your eyesight for years to come. One of the most powerful tools we have is the Optical Coherence Tomography (OCT) — a quick, painless, and highly detailed scan of your eyes.
Let’s break down what it is and why it could make all the difference in your eye health.
🔬 What is an OCT scan?
OCT stands for Optical Coherence Tomography, and it works a lot like an ultrasound — but instead of sound waves, it uses light to create high-resolution, cross-sectional images of the layers of your retina (the back of the eye).
Think of it as a 3D map of your eye, showing us details that simply can’t be seen with a traditional eye exam or retinal photo.
💡 Why is it used during routine eye exams?
Many serious eye diseases don’t cause noticeable symptoms until they’re quite advanced. The OCT helps us detect those issues much earlier — when they’re easier to treat or even prevent.
We use OCT to screen for:
- Glaucoma – by measuring the thickness of the optic nerve and nerve fiber layers
- Macular degeneration – detecting early signs of dry or wet AMD
- Diabetic retinopathy – identifying fluid or damage in the retina before vision changes occur
- Retinal holes, tears, or detachments
- Macular holes or puckers
- Central serous retinopathy
- And even monitoring changes due to high myopia or systemic conditions like hypertension
🧠 Dr. Sciberras Explains:
“The power of OCT is that it lets us see the hidden layers of your retina. It’s like seeing beneath the surface — long before you’d ever notice changes to your vision. We can track subtle changes over time and intervene early, which often helps preserve sight and prevent serious complications.”
🤖 Using Artificial Intelligence for Enhanced Accuracy
To take your care even further, Dr. Sciberras uses advanced artificial intelligence (AI) tools to scan and analyze OCT macular images.
These AI systems are trained to detect tiny changes in the retina — sometimes before they’re visible to the human eye — helping ensure no detail is missed. The AI supports early diagnosis of conditions like:
- Macular degeneration
- Diabetic macular edema
- Retinal thinning or swelling
“Combining AI analysis with expert interpretation gives our patients the best of both worlds: cutting-edge technology with personalized care,” says Dr. Sciberras.
🔹 OCT Examples: What We Can See Beneath the Surface
These high-definition scans show how OCT helps us detect eye disease early — often before symptoms begin.
🧣 Example 1: Early Macular Degeneration (Dry AMD)
Caption: This OCT scan shows large drusen deposits — a sign of macular degeneration. These can be found during a routine exam before the patient notices any visual disturbances. This is exactly when we want to detect the disease, before it causes vision loss.
🔴 Example 2: Active Wet AMD with Fluid/Bleeding
Caption: This scan reveals fluid accumulation and pigment epithelial detachment — signs of wet AMD that require urgent referral and treatment.
🔵 Example 3: Normal Macula — Healthy Baseline
Caption: A clean, well-layered retina with a healthy foveal contour. This image provides a baseline for comparison over time.
🟢 Example 4: Diabetic Macular Edema
Caption: Cyst-like spaces in the retina caused by fluid leakage from diabetic changes. The patient had no symptoms, but OCT revealed the issue early.
✅ Summary: Why OCT Should Be A Part Of Your Next Eye Exam
In eye care, early detection is everything. With OCT and AI technology, we can catch signs of disease years earlier than traditional methods, giving you the best chance at preserving your vision.
Ask us about adding an OCT scan to your next checkup. It’s fast, non-invasive, and easy to perform. Book your next exam with OCT analysis by clicking here.
