How Much Does Reduced Dosing of Latanoprost and Dorzolamide-timolol Affect Pressure?

Inclusion Criteria: * Adult glaucoma patients who are taking drops: dor-tim and Latanoprost Ophthalmic Solution 0.005% (Lat) and come in for an appointment during the trial period Exclusion Criteria: * Patients who had an SLT or glaucoma procedure or surgery within 3 months of enrollment will be excluded. Other exclusion criteria include the logistical inability to follow up with the trial, the inability to relax eye muscles for an accurate tonometry measurement, and the inability to instill medications. The final determination to be included in the study will be made by the Physician on the day of the appointment.