NCIthesaurus amblyopia An eye disease that is characterized by poor vision in one eye resulting from the brain failing to process inputs from one eye and over time favors the other eye. The weaker or lazy eye often wanders inward or outward. NCI:C118764 DOID:10376 MESH:D000550 ICD10CM:H53.00 ICD9CM:368.00 UMLS_CUI:C0002418 MESH:D000550 disease_ontology SNOMEDCT_US_2025_09_01:155145007 lazy eye eye disease