Acyclovir eye drops, it turns out to be cheap, about 5-6 dollars, and depending on the manufacturer and packaging the most expensive is not more than 20 dollars. Acyclovir eye drops are antiviral eye drops, which are mainly used in ophthalmology for herpes virus infections, epidemic keratoconjunctivitis and other viral infections of keratitis. However, acyclovir eye drops can have a damaging effect on the cornea or conjunctiva when applied for a long period of time. It can inhibit the filamentous division of corneal epithelium, which can cause corneal epithelial defects, resulting in drug-induced keratoconjunctivitis. Therefore, although acyclovir eye drops are cheap, they should not be abused, and should be used according to medical advice and the rules of the disease program and regular use of eye drops.