9D90-9D9Z block
Vision impairment
Definition
A vision impairment results when an eye condition affects the visual system and one or more of its vision functions. Typically, population-based surveys measure visual impairment using exclusively visual acuity, with severity categorized as mild, moderate or severe distance vision impairment or blindness, and near vision impairment. However, in the clinical setting, other visual functions are also often assessed, such as a person’s field of vision, contrast sensitivity and colour vision.
8 subordinate codes
9D90Vision impairment including blindness9D92Specific vision dysfunctions9D93Complex vision-related dysfunctions9D94Impairment of presenting visual acuity9D95Impairment of best corrected visual acuity9D96Impairment of uncorrected visual acuity4B4YOther specified diseases of the immune system4B4ZDiseases of the immune system, unspecified
Nearby in Diseases of the visual system
9A00-9A4ZDisorders of the ocular adnexa or orbit9A60-9B3ZDisorders of the eyeball - anterior segment9B50-9C0ZDisorders of the eyeball - posterior segment9C20-9C2ZDisorders of the eyeball affecting both anterior and posterior segments9C40-9C4ZDisorders of the visual pathways or centres9C60-9C61.ZGlaucoma or glaucoma suspect9C80-9C8ZStrabismus or ocular motility disorders9D00-9D0ZDisorders of refraction or accommodation