Visual acuity of 5.0 is normal vision. Visual acuity 5.0 is the visual acuity recorded by the five-point recording method, which is converted to be equivalent to a visual acuity of 1.0 in the decimal recording method, and this visual acuity is considered normal. Patients generally do not have cataracts, glaucoma, vitreous hemorrhage, retinal detachment, or other diseases that cause the patient’s vision to deteriorate. Normal visual acuity ranges from 5.0 to 5.2 at the time of the five-point record. However, it is still necessary to develop good eye habits and avoid playing with electronic products such as cell phones and computers for long periods of time. People also need to take proper rests, if you use your eyes continuously for about 30 minutes, take proper rests for a few minutes to relieve visual fatigue. Refractive error has become a more common phenomenon in our life, if there are symptoms such as blurred vision, patients need to consult a doctor in a timely manner, under the guidance of a professional doctor to improve the relevant examination, to seek the most appropriate treatment.