310.278.4000

Select Your Language
  • English
  • Español

Mueller’s muscle

One of the two muscles that plays a role in the opening and closing of the upper eyelid. The other muscle is the levator muscle. Mueller’s muscle is controlled through the autonomic nervous system (sympathetic system) and so cannot be controlled by an individual’s effort. The muscle responds to topical placement of 2.5% phenylephrine drops, which are used when evaluating a patient for ptosis surgery.

WordPress Lightbox
virtual