logarithmic vision chart

A logarithmic visual acuity chart used to simply measure each person's vision. Applicable to children and adolescents in general physical examination, enrollment, recruitment and other physical examinations, far and near vision, clinical and other aspects should also be used. Basic Information Specialist Category: Ophthalmic Examination Category: Physical Examination Applicable gender: whether men and women apply fasting: not fasting Tips: Taboo before check: Do not rub your eyes. Normal value The maximum visual field of the distance vision chart has a viewing angle of 10', the minimum visual standard has a viewing angle of 0.501', and the direct visual acuity of 4.0 to 5.3 (decimal system 0.1 to 2.0). The maximum visual acuity of the near vision chart is 100', the minimum visual standard is 0.631', and the near vision of 3.0 to 5.2 (0.01 to 1.5 decimal) can be directly measured. Clinical significance Abnormal results cannot distinguish the visual acuity of the 1' viewing angle from abnormal visual acuity. Need to check the population of myopia or hyperopia patients. Precautions Taboo before inspection: Do not rub your eyes. Requirements for inspection: Double eye check. Inspection process Taboo before inspection: Do not rub your eyes. Requirements for inspection: Double eye check. Not suitable for the crowd Inappropriate people: There are no clear rules.