The purposes of a study by Patel et al. (A-43) were to investigate the incidence of acute angleclosure glaucoma secondary to pupillary dilation and to identify screening methods for detecting angles at risk of occlusion. Of 5308 subjects studied, 1287 were 70 years of age or older. Seventeen of the older subjects and 21 of the younger subjects (40 through 69 years of age) were identified as having potentially occludable angles.