The semicircle flap technique of eyelid reconstruction is a modified lateral advancement-rotation flap. The procedure combines the use of selective lysis of the limbs of the lateral canthal tendon with a semicircular skin-muscle flap confined to the region of the lateral canthus within the boundary established by the lateral eyebrow and the arc it defines. Reconstruction of one half to more than three fourths of the lower or upper eyelid can be accomplished without borrowing tissue from the eyelids, nose, ear, or mouth. Large forehead, brow, or cheek flaps are elininated, as is the need for closure of the palpebral fissure during the early healing course. The procedure has been used in the reconstruction of 36 lower eyelids and five upper eyelids in 40 patients, with a follow-up period of six months to six years. The usual indication for the use of this procedure is reconstruction of a central, marginal lid defect following the excision of a neoplasm. However, it may also be useful in cases of tissue loss caused by trauma, or for severe lid malpositions for which major kid reconstruction is necessary. The early and long-term cosmetic and functional results have been gratifying.