The standard of normal adult eye vision is 1.0 or 5.0 or above, the method of recording the vision is different, the value is also different. Generally speaking, the naked eye vision of normal adults is above 1.0 or 5.0, if it is lower than this, you should go to the hospital to do a checkup, which should not be ignored, and according to the checkup situation, the symptomatic treatment. Children of different ages, normal vision standards are not the same, such as 7-year-old children normal vision standards and adults almost in 1.0 above, 6-year-old children normal naked eye vision is 0.8 ~ 1.0, 5-year-old children normal naked eye vision is 0.6 ~ 0.8, 4-year-old children normal naked eye vision is 0.4 ~ 0.6. Normal visual acuity generally refers to distance vision, the visual acuity obtained by looking at a visual acuity meter at 5 meters, and if it is a myopic examination, the visual acuity obtained by looking at a small visual acuity meter at 30 centimeters, the normal visual acuity is above 1.0. It is recommended that patients with abnormal vision should seek medical attention to evaluate their condition and follow the doctor’s instructions for treatment.