Umeya, Naohisa Availability of multistep light stimulus method for evaluation of visual dysfunctions. [electronic resource] - Journal of pharmacological and toxicological methods - 27-33 p. digital Publication Type: Journal Article ISSN: 1873-488X Standard No.: 10.1016/j.vascn.2018.12.005 doi Subjects--Topical Terms: AnimalsElectroretinography--drug effectsFemaleRatsRats, Long-EvansRetina--drug effectsSildenafil Citrate--bloodVision Disorders--chemically inducedVision, Ocular--drug effects