Abnormality of vision Metamorphopsia true true HP:0012508 http://www.case.edu/EpSO.owl#Metamorphopsia MSH:D014786 https://www.ncbi.nlm.nih.gov/pubmed/28488762 SNOMEDCT_US:42134006 peter 2013-12-08T08:21:46Z UMLS:C0271185 human_phenotype A visual anomaly in which images appear distorted. A grid of straight lines appears wavy and parts of the grid may appear blank.