Today, we met a 31-year-old male patient who has been wearing self-lens for 1 year, OD:-5.25DS/-1.00DC*175,OS:-5.00DS/-1.00DC*160 for 3 to 4 years, complaining of visual fatigue and wanting to replace his glasses with new ones. Medical optometry: OD:-5.25DS/-1.00DC*5,1.0 (right dominant eye) OS:-4.50DS/-1.00DC*165,1.0 Bilateral visual function test results: distant oblique 3exo,near oblique 9exo,AC/A4 BCC:0,NRA/PRA:+2.25/-2.50 NPC:30cm After the above The patient’s right eye was overcorrected by the self-lens, and the principle of the primary eye was wrong. 2. The patient’s ability to see near was abnormal, and the amount of external oblique was significantly greater than that of far, and the collection point was significantly distant. 3. 3 months review: Most of the patients find that the visual fatigue is mostly considered to be caused by changes or errors in their own glasses, but often there is a bilateral visual function abnormality, simply replacing the glasses to treat the symptoms but not the root cause, in addition to glasses, but also some joint training to improve the abnormal situation! It is recommended that if you have visual fatigue, go to the hospital for a detailed binocular vision examination to identify the cause and then targeted treatment will be more effective!