USUAL STARTING DOSE IS ONE DROP OF 0.25 PERCENT TIMOLOL IN THE AFFECTED EYE(S) TWICE A DAY. IF THE CLINICAL RESPONSE IS NOT ADEQUATE, THE DOSAGE MAY BE CHANGED TO ONE DROP OF 0.5 PERCENT SOLUTION IN THE AFFECTED EYE(S) TWICE A DAY.
IF THE INTRAOCULAR PRESSURE IS MAINTAINED AT SATISFACTORY LEVELS, THE DOSAGE SCHEDULE MAY BE CHANGED TO ONE DROP ONCE A DAY IN THE AFFECTED EYE(S). BECAUSE OF DIURNAL VARIATIONS IN INTRAOCULAR PRESSURE, SATISFACTORY RESPONSE TO THE ONCE-A-DAY DOSE IS BEST DETERMINED BY MEASURING THE INTRAOCULAR PRESSURE AT DIFFERENT TIMES DURING THE DAY.
SINCE IN SOME PATIENTS THE PRESSURE-LOWERING RESPONSE TO TIMOLOL MAY REQUIRE A FEW WEEKS TO STABILIZE, EVALUATION SHOULD BE AFTER APPROXIMATELY 4 WEEKS OF TREATMENT.