Certified Ophthalmic Medical Technologist (COMT)

Answer: D - Proparacaine can be used to rule out surface causes of pain from a corneal abrasion.

Proparacaine is an ocular anesthetic that is applied topically. This eyedrop delivers 10-20 minutes of anesthesia or numbness of the eye surface. Proparacaine can be utilized to rule out surface origins of pain in situations with unidentified eye pain, such as a corneal or epithelial abrasion. One drop of proparacaine relieves the discomfort nearly immediately.