Younger than 18 years old

Inability to understand and/or follow study requirements

Women of childbearing potential not using reliable birth control, pregnant or lactating women

History of chronic obstructive pulmonary disease, heart failure, 2nd or 3rd AV block

Anticipated modification of treatment for systemic hypertension during the study period

History of ocular herpes, corneal scarring, conventional or laser surgery or macular pathology

History of allergy, poor tolerability or poor response to study medication

Best corrected visual acuity less than 0.4

Significant visual field defect (MD\<15.0 dB)

Intraocular Pressure Reduction With the Bimatoprost/Timolol Fixed Combination