Objective To analyze the application effects of endoscopic optic nerve decompression in patients with traumatic optic neuropathy and its effect on visual acuity.Methods From January 2014 to January 2016,100 patients (100 eyes) with traumatic optic neuropathy in our hospital were selected as observation objects.According to different treatment methods,the patients were divided into observation group and control group,50 cases in each group.The control group was treated with drugs,and the observation group with endoscopic sinus decompression of optic nerve on the basis of the control group after the stability of the disease.The patients in two groups were followed up at least 1 year.The clinical efficacy,visual acuity,VEP findings and incidence of adverse reactions were compared between the two groups.Results The effective rates in the observation group and control group were 76.0％ and 36.0％,there was significant difference between two groups (P ＜ O.05).In the observation group,the visual acuity of 16 eyes were improved in 22 eyes with no light perception,9 eyes in 13 eyes with light perception,9 eyes in 11 eyes with hand movement,and 4 eyes with finger counting were all improved;In the control group,the visual acuity of 6 eyes were improved in 20 eyes with no light perception,6 eyes in 14 eyes with light perception,5 eyes in 12 eyes with hand movement,1 eye in 4 eyes with finger counting.After treatment,the incubation period and amplitude of P1O0 in the observation group were (116.85 ±7.96) ms and (5.11 ± 1.16) μV,which were better than the control group (105.62 ±6.82) ms,(4.31 ± 1.25) μV.The incidence of adverse reaction in the observation group was significantly lower than that in the control group (P =O.000).Conclusion The endoscopic optic nerve decompression has a good application effect and safety in patients with traumatic optic neuropathy,can effectively improve the patient's visual acuity,help to improve the quality of life of patients,is worthy of clinical application.