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Each evaluator scored images on a 1–4 scale based on their own interpretation of cancerous vs. non-cancerous.
| OCT Grade | Grade Key |
|---|---|
| 1 | No cancer seen in image or video |
| 2 | No cancer seen in image or video, with less certainty |
| 3 | Cancer seen in image or video, with less certainty |
| 4 | Cancer seen in image of video |
