lid retractors

lid retractors

Term used to refer to the muscles that open the eyelids. In the upper eyelid it is the levator palpebrae muscle and its two divisions; the striated levator aponeurosis and the smooth Müller's muscle (or superior tarsal muscle). In the lower eyelid it is the smooth fibre bundle derived from the inferior rectus muscle that forms the inferior tarsal muscle. See levator palpebrae superioris muscle; Müller's palpebral muscles.
References in periodicals archive ?
Lid retractors may press the eye and cause bulging of the intraocular contents.
In other words, laxity caused by lid retractors (muscles and bands that make the eyelids move up and down) compared with laxity of the suspending ligaments (that provide stability to the eyelids in a horizontal direction).
Because laxity of tissues can occur in the lid retractors, as well as in the horizontal ligaments, and given the fact that the lower eyelid position is also influenced by gravity, by varying amounts, it is possible for partial or complete ectropion to occur.