Fang Z, Wang X, Qiu S, et al. - In the present study, the researchers measured the 24-h intraocular pressure (IOP) by Icare PRO rebound in healthy and primary open-angle glaucoma (POAG) eyes and compared it with non-contact tonometry (NCT). Participants in the study were 30 POAG patients who were under IOP-lowering treatment and 30 healthy individuals. The Icare PRO is a well-tolerated approach for 24-h IOP monitoring in a habitual position. For POAG patients, 24-hour IOP in habitual position is more sensitive for detecting high nocturnal IOP peaks and greater IOP fluctuation.