The goal of currently available glaucoma therapy is to preserve visual function by lowering intraocular pressure (IOP) below a level that is likely to produce further damage to the nerve. The treatment regimen that achieves the goal of preserving function with the lowest risk, fewest adverse effects, and least disruption of the patient's life, taking into account the cost implications of treatment, should be the approach taken. The goal of currently available glaucoma therapy is to preserve visual function by lowering intraocular pressure (IOP) below a level that is likely to produce further damage to the nerve. The treatment regimen that achieves the goal of preserving function with the lowest risk, fewest adverse effects, and least disruption of the patient's life, taking into account the cost implications of treatment, should be the approach taken.