Keratopigmentation is done with anesthetic eye drops to numb the eyes. Your head is strapped into a harness to keep it still, and a caliper-like device will hold your eyelid open and prevent blinking.

A couple drops in your eye usually brings relief, not concern—but a rare recall case highlights the importance of a clean, sterile bottle.

Furthermore, a survey of eye care providers revealed a general reluctance to use topical anesthetics in emergency departments, suggesting that more evidence is needed to support their routine use[4].