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When color helps

Ana Luiza Fontes de Azevedo Costa ORCID logo , Thiago Gonçalves dos Santos Martins ORCID logo , Ricardo Vieira Martins ORCID logo , Paulo Schor ORCID logo

DOI: 10.31744/einstein_journal/2019AO4410

ABSTRACT Objective: To reduce the inappropriate identification of eye drops, through the use of different colors. Methods: A group of 34 healthy volunteers was presented to two groups of four eye drops each. All eye drops were placed in identical, unlabelled vials. In one group, all four eye drops were transparent. In the other group, each had a different color. A number was assigned to each eye drop, and the volunteer was asked to identify it by color. We measured […]