A unilateral corrected visual acuity of not less than 5.0 is normal, usually for no particular reason. Corrected visual acuity, as opposed to naked eye visual acuity, is the visual acuity that results from the use of eyeglasses to correct refractive errors. It is clinically recognized that the normal range of corrected visual acuity for myopic patients should be 5.0 or above in one eye, so a unilateral corrected visual acuity of not less than 5.0 is normal and is not caused by any special reasons. Corrected visual acuity is different from naked eye visual acuity, generally myopic patients’ visual acuity can reach 5.0 after correction. If the patient’s visual acuity is still low and cannot meet the requirements after several corrections, it is necessary to consider whether there are other factors, and it is recommended to seek help from a professional doctor in a timely manner. It is recommended that patients with corrected vision loss seek medical attention to evaluate their condition and follow the doctor’s instructions for treatment.