Poor vision must be identified as the specific cause, such as refractive error, cataract, iridocyclitis, etc. Patients choose the appropriate treatment according to their condition to improve their vision, but not all patients can regain their vision. Refractive errors can cause vision loss. Patients can wear glasses or undergo refractive surgery to correct refractive errors and improve vision. Cataracts can also cause vision loss and can be treated with surgical procedures, such as cataract aspiration with ultrasonic emulsification combined with IOL implantation. Patients with iridocyclitis can also suffer from vision loss. Patients can follow the doctor’s instructions to use hormone eye drops, such as prednisolone acetate eye drops, to control inflammation and promote recovery. It is recommended that patients with vision loss seek timely medical attention to assess their condition and under the guidance of a doctor.