Where can sub-palpebral lavages be placed?

• A. Upper lid only
• B. Lower lid only
• C. Upper lid and lower lid (less complications)
• D. Conjunctival sac

Answer: (C)

Sub-palpebral lavage systems sit in the space beneath the palpebral conjunctiva, along the eyelid margin, so the tubing can deliver fluid into the conjunctival sac without rubbing directly on the cornea. Because this sub-palpebral space exists in both the upper and lower lids, the cannula can be placed in either lid. Using both eyelids when feasible provides more avenues for lavage, reduces focal irritation, and lowers the risk of complications such as irritation, displacement, or blockage that can occur if the system is restricted to a single lid. The goal is to keep the tube out of direct contact with the cornea and to maintain a stable, low-irritation route for repeated administration into the conjunctival sac.