Combigan Ophthalmic Solution(Brimonidine 0.2% and Timolol 0.5%)With Latanoprost Compared With Latanoprost Monotherapy

The purpose of this study is to comparethe efficacy and safety Ophthalmic Solution in combination with Latanoprost when the therapy is swiched from Latanoprost monotherapy in patient with Glaucoma or ocular hypertension. The study will be open label, prospective, multi-centered where patients will be swiched from Latanoprostmonotherapy to a combination therapy of Latanoprost with Combigan Ophthalmic Solution.