Ag. Lee et al., Isolated inferior rectus muscle palsy resulting from a nuclear third nervelesion as the initial manifestation of multiple sclerosis, J NEURO-OPH, 20(4), 2000, pp. 246-247
Isolated inferior rectus muscle (IRM) palsy due to a nuclear or fascicular
third nerve lesion is uncommon (1-4), and third cranial nerve palsy as the
presenting sign of multiple sclerosis (MS) is rare (5-9). We report an unus
ual patient with an isolated IRM palsy caused by a demyelinating lesion in
the midbrain seen on magnetic resonance imaging (MRI).