Which surgical procedure is commonly done for horizontal lid laxity in ectropion?

The lateral tarsal strip procedure is a surgical intervention specifically designed to address horizontal lid laxity associated with ectropion, which is the condition where the eyelid turns outward. This procedure involves the reattachment of the eyelid to the underlying structures, aiming to restore the tension of the eyelid and improve its position.

The lateral tarsal strip procedure works by removing a strip of tissue from the lateral canthus (the outer corner of the eye) and securing it to the periosteum (the connective tissue around the bone). This enhances eyelid tonicity and stability, effectively addressing the laxity that contributes to the outward turning of the lid.

In contrast, other options like the medial conjunctival spindle procedure and lower lid retractor reinsertion address different aspects of eyelid malposition but are not primarily aimed at correcting the horizontal laxity seen in ectropion. Meanwhile, anterior lamella augmentation may be used in cases of insufficient eyelid tissue but does not specifically target lid laxity. Hence, the lateral tarsal strip procedure is the most effective choice for treating horizontal lid laxity in this context.