The stimulation of the trigeminal nerve by contraction of the pterygoid muscles of jaw results in the excitation of the branch of the oculomotor nerve that innervates the levator palpebrae superioris ipsilaterally ( on the same side of the face ), so the patient will have rhythmic upward jerking of their upper eyelid.
12.
The ligament allows for a change of the functional origin of the levator palpebrae superioris muscle, enabling the superior tarsus ( eyelid ) to be elevated superiorly rather than directly toward the muscle's origin on the sphenoid bone . attaches medially to the pulley of superior oblique muscle Trochlea of superior oblique and laterally to the lacrimal gland 10mm above Whitnall tubercle.
