We investigated the impairment in the optic radiations affected by the anterior visual pathway compression using the diffusion tensor imaging (DTI), and neurite orientation dispersion and density imaging (NODDI). The results were correlated with the visual field impairment score (VFIS), which assesses the function of posterior visual pathway. The DTI and NODDI parameters in the optic radiations were significantly correlated with postoperative visual field improvement as well as preoperative visual field impairment in patients with the compression of optic chiasm. The study demonstrated the anterior visual pathway compression influences the visual field defect of the posterior visual pathway.
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