has part has part characteristic of inheres in has modifier visual perception Abnormality of vision Visual impairment HP:0007983 UMLS:C3665347 Visual impairment Loss of eyesight Impaired vision HP:0000566 HP:0007860 HP:0000505 HP:0000516 SNOMEDCT_US:7973008 SNOMEDCT_US:246635007 Poor vision UMLS:C0042798 Visual impairment (or vision impairment) is vision loss (of a person) to such a degree as to qualify as an additional support need through a significant limitation of visual capability resulting from either disease, trauma, or congenital or degenerative conditions that cannot be corrected by conventional means, such as refractive correction, medication, or surgery. SNOMEDCT_US:397540003 HP:0007758 abnormal decreased process quality