Nailfold Capillary Hemorrhages: Microvascular Risk Factors for Primary Open-Angle Glaucoma.

Background: Primary open-angle glaucoma (POAG) is associated with systemic microvascular dysfunction including hemorrhages and other abnormalities of the nailfold capillary bed. This study aimed to verify the specificity of nailfold capillary hemorrhages and other abnormalities as risk factors for POAG.

Methods: Nailfold video capillaroscopy was performed using a JH-1004 capillaroscope on the fourth and fifth digits of the nondominant hand in control ( = 277), POAG ( = 206), OHT ( = 57), and SG ( = 29) subjects.