
Pooled results from two randomized, investigator-masked parallel group clinical trials show that the fixed combination fo brimonidine tartrate 0.2%-timolol maleate 0.5% produced greater IOP lowering than the fixed combination of dorzolamidehydrochloride 2%-timolol maleate 0.5%, whether the fixed combination products were used alone or as an adjunct to treatment with a prostaglandin analogue.