optic

noun [专属名词]（光学仪器的）镜头，光学部件；奥普蒂克量杯（酒吧用以量烈性酒）；<古>眼睛

Repairs to the nervous system will start with optic nerves and, in time, the spinal cord.
对神经系统的修复将从视神经开始，并适时地从脊髓开始。