The palpebral fissure inclination is more than two standard deviations above the mean for age (objective); or, the inclination of the palpebral fissure is greater than typical for age. The phenotype is Upslanted palpebral fissure (Human Phenotype Ontology entry HP_0000582). Also known as: Mongoloid slant, Upslanting palpebral fissures, Upward slanted palpebral fissures, Upward slanting of palpebral fissures, Upward slanting of the opening between the eyelids, Upward slanting palpebral fissures.