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Gonioscopic view of the chamber angle with iris processes. (A) In the negative group, blood reflux in SC was absent after removal of the pressure from the lens at the viewed quadrant. (B) In the positive group, blood is observed in the SC removal of the pressure from the lens at the viewed quadrant. The two images were taken at the same quadrant from different eyes. ∆ indicates blood in the SC. SC, Schlemm's canal.
