Objective: To investigate the relevant factors affecting the prognosis of traumatic optic neuropathy (TON).
Methods: A total of 685 cases (719 eyes) of TON from June 2007 to June 2012 were analyzed retrospectively. A total of 9 independent variables (X) including sex, side of TON, duration of coma, vision after trauma, fracture of optic nerve canal, fracture of big ridge of sphenoid bone, hematoma in sphenoid sinus and surgical treatment, and the dependent variable (Y) of visual prognosis were analyzed using the unconditioned Logistic regression analysis to find the risk factors for the visual prognosis of TON.
Results: A total of 325 eyes (45.2%) recovered out of 719 eyes. Four variables showed a significant relation with the visual recovery: duration of coma>0.5 h (X3, P<0.01), remnant vision after trauma (X4, P<0.01) and sphenoid ridge fractures (X7, P<0.01), and surgical treatment (X9, P<0.01). These factors above were also proved to be significant in Logistic regression.
Conclusion: The duration of coma>0.5 h, no light perception after trauma, sphenoid ridge fractures are risk factors of visual recovery, while surgical treatment is the protective factor for the visual recovery after TON.