| 摘要 |
The present invention provides a novel drug for treating glaucoma. The present invention relates to a therapeutic agent for glaucoma and an ocular hypotensive agent, which comprise an aminoalkoxybibenzyl represented by the formula (I): <IMAGE> (I) wherein R1 represents a hydrogen atom, a C1-C5 alkoxy group, etc.; R2 represents a hydrogen atom, a halogen atom, etc.; R3 represents a hydrogen atom, a hydroxyl group, -O-CO-(CH2)I-COOH (wherein I is an integer of 1 to 3), etc.; and R4 represents -NR5R6 (wherein R5 and R6 independently represent a hydrogen atom or a C1-C8 alkyl group), etc. or a salt thereof as an active ingredient.
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