Swept-source OCT (SS-OCT) is an advanced form of optical coherence tomography that uses a longer wavelength light source to capture deeper, higher-quality images of the retina and underlying structures.
Unlike traditional spectral-domain OCT, swept-source systems provide improved penetration, faster scan speeds, and better visualization of the choroid and vitreous.
Swept-source OCT uses a tunable laser that rapidly sweeps across a range of wavelengths, allowing it to capture detailed cross-sectional images of the eye.
Key characteristics:
Result: clearer imaging of deeper ocular structures
| Feature | Swept Source OCT | Spectral Domain OCT |
|---|---|---|
| Wavelength | Longer (~1050 nm) | Shorter (~840 nm) |
| Imaging Depth | Deep (choroid) | Standard retinal |
| Speed | Faster | Moderate |
| Image Quality at Depth | Higher | Reduced |
| Best Use | Advanced diagnostics | Routine screening |
What is swept source OCT?
Swept-source OCT is an advanced imaging technology that uses a longer wavelength light source to capture deeper and more detailed images of the retina and choroid.
Is swept source OCT better than spectral domain OCT?
For deeper imaging and complex retinal conditions, yes. Spectral-domain OCT remains effective for routine diagnostics.
What is swept source OCT used for?
It is used for diagnosing and managing retinal diseases, choroidal conditions, and vascular abnormalities.
Does swept source OCT include angiography?
Many systems include OCT angiography (OCTA) for non-invasive vascular imaging.
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