| abstract |
(57) Summary The present invention treats vision impairment, improves vision, treats memory impairment, or enhances memory behavior in animals administered an effective dose of a heterocyclic ester or amide. For how to. The invention further relates to a pharmaceutical composition comprising: (1) a heterocyclic ester or amide for treating vision impairment in an animal, improving vision, treating memory impairment, or enhancing memory behavior. An effective dose; and (2) a pharmaceutically acceptable carrier |