There are more types of drugs for nourishing the optic nerve, which can be divided into oral drugs, intravenous infusion drugs and intramuscular injection drugs according to their dosage forms. For example, vitamin B12 tablets, methylcobalamin tablets and methylcobalamin capsules are commonly used at present. Intravenous infusion treatment includes ganglioside injection, brain protein hydrolysate injection, etc. Intramuscular injection drugs include murine nerve growth factor, adenosine cobalamin for injection, vitamin B12 for injection, etc. The above drugs mainly provide essential nutrients for the normal function of nerves and the synthesis of nerve fiber structures, or are themselves biological factors that promote nerve repair and growth. However, the effect of optic nerve nourishing drugs is usually slow, and it is necessary to persist in using the drugs for a period of time to gradually see the improvement of the disease.