Patients with a diagnosis of ocular hypertension or bilateral glaucoma, naive or on treatment with up to two classes of hypotensive eye drops will be invited to participate in the study.
These patients will have both eyes included in the study. A randomization will be made to allocate one eye to receive treatment with PSLT (treatment group), while the contralateral eye will receive treatment with prostaglandin eye drops (control).
Patients will be followed up for 12 months and periodically tonometry, computerized perimetry, water overload test and OCT will be performed.