At what age can I start applying Botox?The treatment of entropion is always surgical. The operation consists of tightening the lower eyelid tendon, i.e., “tarsal strip” and suturing the lower eyelid retractor muscles to their original position. It is an outpatient procedure performed under local anesthesia. One, or both eyelids, may be corrected at the same time. The operation allows the eyelid margin to rest at its normal position and recover its functionality.