Proparacaine hydrochloride is a local anesthetic medication commonly used in ophthalmology. It belongs to the class of ester-type local anesthetics. Proparacaine hydrochloride works by blocking nerve signals in the eye, temporarily numbing the surface of the eye and reducing discomfort during eye examinations or minor eye procedures. It is typically administered as eye drops and takes effect quickly, providing rapid relief. Proparacaine hydrochloride should be used under the guidance of a healthcare professional and in the recommended dosage.