Whether or not eye vision of 4.8 falls within the normal range is determined by the age group the patient is in. It is generally not normal for people six years of age and older. 1. Eye vision 4.8 indicates different clinical significance for different age groups. For preschool children under five years old, a visual acuity of 4.8 is generally within the normal range; for people six years old and above, a visual acuity of 5.0 and above is normal, and a visual acuity of 4.8 is not within the normal range, and needs to be combined with a dilated pupil optometry and other tests for identification and judgment. 2. For middle-aged and elderly people, visual acuity of 4.8 is also not within the normal range, which may be caused by refractive error, or by organic diseases such as diabetes or cataracts, which need to be examined to determine. If patients have symptoms of vision loss, they should go to regular hospitals in a timely manner, complete the examination, identify the cause, and then deal with it under the guidance of professional ophthalmologists, so as not to delay the condition.