Clinically it is usually measured with the Snellen chart or other similar device. American Academy of Ophthalmology Definitions Visual Acuity Acuteness or clarity of vision which is dependent on the sharpness of the retinal focus, the sensitivity of the nervous elements, and the interpretative faculty of the brain. The ICD-10 is used primarily as a reporting mechanism for doctors and physicians and insurance companies and medical services providers use it extensively. But can also be coded by etiology as juvenile glaucoma 365.14 or 362.74 as retinitis pigmentosa. For example, total blindness both eyes is coded 369.01. Levels of visual loss are coded starting with the numbers 1-5. This coding of all diseases includes a five digit code. International Statistical Classification of Diseases - revision 10 (ICD-10). Low Vision, Profound Difficulty with gross visual tasks. Low Vision, Severe Performs visual tasks at a reduced level.
Low Vision corresponds to visual acuity of less than 6/18 (0.3) but equal to or better than 3/60 in the better eye with best correction. (IDEA, 2004) World Health Organization Definitionsīlindness is defined as visual acuity of less than 3/60 (0.05) or corresponding visual field loss in the better eye with best possible correction. The term includes both partial sight and blindness. Visual impairment including blindness means an impairment in vision that, even with correction, adversely affects a child’s educational performance. (Rehabilitation Services Administration) Children:
#Legally blind vision license
Note that in most states 20/70 is required to get a driver's license unless the person is referred to a bi-optic driving program for special training.
Visual acuity better than 20/200 but less than 20/70 in the better eye with best correction. (Social Security Administration) Severely Visually Impaired Adults: Legally BlindĬentral visual acuity 20/200 or less in the better eye with best correction or widest diameter of visual field subtending an angle of no greater than 20 degrees.
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