👉 Proplexus is a medical term that refers to the muscular part of the eye, specifically the muscles responsible for lifting and moving the eyelid. It helps to close or open the eyes, as well as controlling the movement of the iris (the colored part of the eye) and the pupil (the opening at the center of the eye). Proplexus is also involved in the function of the cornea, which is the clear lens that forms the outermost layer of the eye.