The mean number of topical glaucoma medications used prior to surgery was 1.84: 22 patients (88%) used topical prostaglandin (one time daily), 8 patients (32%) used a topical αlpha-2 agonist (two times daily), 8 patients used a topical beta-blocker (two times daily), and 8 patients (32%) used topical dorzolamide (two times daily). This evidence concerns the gene PSMA2 and glaucoma.