WebIn this instance, adduction weakness prevents the superior oblique muscle from depressing the eye. However, if the superior oblique muscle is functional, it intorts the eye when the … • Step 1: Determine which eye is hypertropic in primary position. If there is right hypertropia in primary position, then the depressors of the R eye (IR/SO) or the elevators of the L eye are weak (SR/IO). • Step 2: Determine whether the hypertropia increases on right or left gaze. The vertical rectus muscles have their greatest vertical action when the eye is abducted. The oblique muscles have their greatest vertical action when the eye is adducted.

Trochlear nerve anatomy, function, trochlear nerve damage

WebDec 11, 2024 · oscillation; one eye rises and intorts, the other falls and exto rts; this is sometimes associated with bitemporal hemia nopia caused by sellar or parasellar masses [21]. WebAn introduction to correct terminology of ocular motility (medical). Get my new (May 2013) interactive book on your iPad, http://itun.es/i6xT3Yf martha walter paintings for sale

The Six Muscles of the Eye · Brimhall Eye

WebTrochlear nerve. Trochlear nerve is a fourth cranial nerve (CN IV) that carries motor fibers to innervate the superior oblique muscle, an extra-ocular muscle in the orbit 1), that controls abduction and intorsion of the eye 2).Trochlear nerve damage results diplopia (double vision) with inability to look inferiorly when the eye is adducted (down and in). WebTrochlear nerve. Trochlear nerve is a fourth cranial nerve (CN IV) that carries motor fibers to innervate the superior oblique muscle, an extra-ocular muscle in the orbit 1, that controls abduction and intorsion of the eye 2. Trochlear nerve damage results diplopia (double vision) with inability to look inferiorly when the eye is adducted (down ... WebCongenital fourth nerve palsy is a condition present at birth characterized by a vertical misalignment of the eyes due to a weakness or paralysis of the superior oblique muscle.. … martha walsh singer