Free tool · Interactive
Understand your OCT report
Explore a sample OCT and click its parts to learn what every value means.
⚠ Acute symptoms?Sudden vision loss, an eye injury, chemicals in the eye, severe pain, or new blind spots in your visual field? Don't wait for an online explanation — call your GP (huisarts), the out-of-hours GP service, or 112 immediately.
Sample OCT report · Macula + RNFL · OD
Sample dataCross-section of the retina (B-scan)
Click the numbered points to understand each part
1 · The fovea (the little pit)
This dip is normal! It's the centre of your sharp vision. On a healthy scan it's a smooth, symmetrical dimple. If the pit fills up (with fluid, for instance) or shows a hole, that's something a professional wants to see.
View your own OCT next to the guide
Stays on your devicePick a PDF or photo of your OCT report and place it next to the annotated guide above. Nothing is uploaded or stored.
or drag your file here
PDF · JPG · PNG · WebP · max 25 MB
Coming soon: automatic explanation of your own values
Instant explanation of your own report, with a source for every number. Leave your email and you'll be the first to know.
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Frequently asked questions
Is an OCT scan harmful or painful?
No. OCT uses weak, harmless light; nothing touches your eye and the scan takes seconds. It can be repeated without limit.
My optician saw 'something' on the OCT — is that serious?
By no means always. Abnormal values can also be measurement artefacts or harmless variants. What matters is that someone qualified assesses the complete report, including signal quality and the trend over time.
Why is the trend between scans so important?
One scan is a snapshot; change over time is often more telling than one absolute number. Always ask for a copy of your report so the next assessor can compare.
Further reading in the knowledge base
Watery eyes: why 'too wet' often means 'too dry'
Constantly watering eyes are surprisingly often caused by… dry eyes. The paradox explained, plus the other causes: blocked tear ducts, lid position and wind — and what can be done.
Pterygium and pinguecula: that yellow or filmy patch on your eye
A yellow bump or a wing of tissue growing over the cornea: pinguecula and pterygium are benign and linked to sunlight. When treatment is worthwhile.
Want real certainty?
A registered optometrist reviews your complete file — measurements, scans and your question — and signs a report. Within 48 hours.
See the review options