OBJECTIVE: To determine the pattern of extraocular muscle (EOM) paresis in incomplete @entity2895 (3NP) that have normal pupillary function. METHODS: A retrospective study in a private practice and academic neuro-ophthalmic practice. @entity1 diagnosed with vasculopathic 3NP within 4 weeks of symptom onset were identified. The chart of each @entity1 was reviewed to determine pupillary function and the pattern and degree of EOM and levator palpebrae paresis at the time of presentation. RESULTS: Of 55 @entity1 with vasculopathic 3NP, 42 (76%) had normal pupillary function. Of these 42, 23 (55%) demonstrated an @entity121 , defined as partially reduced ductions affecting all third nerve-innervated EOMs and levator (diffuse pattern) or partially reduced ductions that involved only some third nerve-innervated EOMs and levator (focal pattern). Twenty (87%) of these 23 @entity1 showed a diffuse pattern of paresis; only three (13%) showed a focal pattern of paresis, one that affected only the superior rectus and levator muscles (superior division weakness). CONCLUSIONS: Based on our series, most @entity1 with EOM/levator involvement in pupil-sparing, incomplete 3NP of vasculopathic origin have a diffuse pattern of paresis. In contrast, our review of the literature suggests that pupil-sparing 3NP of aneurysmal origin usually have a focal pattern of paresis. We propose that distinguishing these two patterns of EOM paresis may be helpful in differentiating between @entity439 . Future studies will be needed to confirm the clinical utility of this hypothesis.

Patterns of extraocular muscle weakness in XXXX .

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients', 'patient'] @entity439 :: ('MESH:D000783', 'Disease') :: ['vasculopathic and aneurysmal 3NP'] @entity121 :: ('MESH:D009135', 'Disease') :: ['incomplete EOM palsy'] @entity2895 :: ('MESH:D015840', 'Disease') :: ['vasculopathic third nerve palsies']
@entity2895 :: (MESH:D015840,Disease) :: ['vasculopathic pupil-sparing, incomplete third nerve palsy']
