Ganglion cell complex and retinal nerve fiber layer thickness in predicting visual outcome in brain tumors after surgery

In chiasmal compression, RNFL and GCC thickness measurements using OCT can be a useful prognostic indicator for assessing visual recovery. An eye with structural damage, with significant RNFL and GCC loss, is a predictive factor of blindness. A minimum preoperative RNFL and GCC thickness of 73 µm and 58 µm, respectively, can preserve vision after surgery.