Visual acuity of 5.2 is in the normal range of vision, indicating that the patient has better vision. Visual acuity of 5.2 is the result of visual acuity examination. 5.2 is the visual acuity recorded by the five-point visual acuity recording method, which corresponds to the visual acuity of 1.5 in the decimal visual acuity recording method, which indicates that the patient’s visual acuity is better, and if there are no other discomforts, no special intervention is usually needed. Patients with normal vision should also pay attention to developing good eye habits, controlling the time and distance between eyes, reducing bad habits such as playing video games, and having regular vision checkups. If patients find that sudden vision loss or blurred vision, it may be caused by refractive error, cataract, retinal detachment, keratitis, etc., and patients may also experience photophobia, tearing, eye pain and other uncomfortable symptoms. It is recommended that patients with vision loss seek prompt medical attention to assess their condition and follow the doctor’s instructions for treatment.