THE TAKEAWAY
OCT primarily shows retinal structure; OCTA adds motion-based visualization of blood flow without dye injection.
01
OCT
Think structure: retinal layers, fluid, contour and thickness.
02
OCTA
Think flow: vascular networks and perfusion patterns derived from repeated OCT scans.
03
Why the distinction matters
Together they can provide complementary information, but each has artifacts, limitations and interpretation requirements.
RESEARCH NOTE
Evidence should be inspectable.
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