function of the trochlea
through the trochlea by means of a sliding action with the central fibers undergoing the maximum excursion. [Key words: Superior oblique, trochlea.] Ophthalmology 89: 124-133, 1982 The trochlea is a complex structure attached to the bony orbit at the trochlear fossa (or trochlear spine) located near the junction of the superior and medial orbital rim.1 The function of the trochlea is to redirect the superior oblique tendon so that it pulls in an anterior direction along a line approximately 55Â° nasal to the saggital plane. 2 The trochlea is not readily acÂ­ cessible from the usual transconjunctival approach to the extraocular muscles. This is because the trochlea