Prediction of intraocular pressure reduction after phacoemulsification surgery: A prospective observational study.

We aimed to determine the predictive value of the anterior segment and lens structures for intraocular pressure (IOP) reduction after uncomplicated phacoemulsification surgery. This prospective observational study included 133 nonglaucomatous open-angle eyes with uncomplicated cataracts. The preoperative anterior segment and lens structure measurements were performed. The predictive values of preoperative IOP, anterior chamber depth (ACD), axial length, lens thickness (LT), lens vault (LV), anterior chamber volume, iridocorneal angle, anterior chamber angle 500/750, and angle opening distance 500/750 for IOP reduction were analyzed. IOP reduction was significantly correlated with LV, ACD, LT, and preoperative IOP (R = 0.292, P = .003; r = -0.218, P = .030; R = 0.205, P = .043; and R = 0.660, P < .001, respectively). LV (F [1, 97] = 9.051, P = .003), ACD (F [1, 97] = 4.841, P = .030), LT (F [1, 97] = 3.829, P = .043), and preoperative IOP (F [1, 97] = 74.791, P < .001) were significant predictors of IOP reduction. Preoperative IOP, LV, LT, and ACD were significant predictors of IOP reduction in nonglaucomatous open-angle eyes after uncomplicated phacoemulsification surgery.