Commercial eye drops fail to fully meet the therapeutic requirements for infectious ocular diseases. When treating certain infectious ocular diseases where existing ophthalmic preparations are inadequate, extemporaneously prepared eye drops become necessary. Given the absence of regulations or standards for extemporaneously prepared eye drops in China, the Ophthalmic Pharmacy Expert Committee of the Guangdong Pharmaceutical Association organized relevant experts relevant experts to establish a standard for the extemporaneous preparation of eye drops after rigorous discussions. This initiative aims to enhance the accessibility of extemporaneously prepared eye drops and provide reference for ophthalmologists, pharmacy workers, and users of ophthalmic extemporaneously preparations.