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In the positive group, the number of quadrants with blood reflux was positively correlated with the decrease in IOP after SLT. This correlation was identified at (A) 3 months (P=0.037) and (B) 6 months (P=0.020) after the SLT. The abscissa refers to the numbers of the quadrants with blood reflux in Schlemm's canal. SLT, selective laser trabeculoplasty; IOP, intraocular pressure.
