Visual acuity of 4.6 may be caused by pseudomyopia, true myopia or cataracts, etc. Pseudomyopia may be restored after conditioning, true myopia needs to be corrected in time, and cataracts generally require surgical treatment. 1. Pseudomyopia: If it is caused by long-term eye fatigue, improper eye posture and other causes of vision loss, it can be adjusted back by paying attention to rest, and if necessary, following the doctor’s instructions to use drugs, such as seven leaves of digitalis bisabololol eye drops and so on. 2. Genuine myopia: If myopia and other refractive errors have been formed, causing vision loss, it may not be able to recover through simple adjustment. Need timely medical examination, correction, can choose glasses, surgery and other corrective methods, patients usually need to pay attention to protect the eyes. 3. Cataracts: patients with visual acuity of 4.6 may also be due to cloudy lens and other cataracts, if this is the case, you can replace the artificial lens through surgery and other treatments. Visual acuity of 4.6 may also be caused by other reasons, it is recommended to improve the relevant examinations in a timely manner, standardized treatment.