1. Conditions which cannot represent nuclear lesions: unilateral external ophthalmoplegia (with or without pupil involvement) associated with normal contralateral superior rectus function unilateral internal ophthalmoplegia unilateral ptosis isolated unilateral or bilateral medial rectus weakness |
2. Conditions which may be nuclear: bilateral total third nerve palsy bilateral ptosis bilateral internal ophthalmoplegia isolated single muscle involvement (except levator and superior rectus) |
3. Obligatory nuclear lesions: unilateral third nerve palsy with contralateral superior rectus and bilateral partial ptosis bilateral third nerve palsy (with or without internal ophthalmoplegia) associated with spared levator function |
1. Conditions which cannot represent nuclear lesions: unilateral external ophthalmoplegia (with or without pupil involvement) associated with normal contralateral superior rectus function unilateral internal ophthalmoplegia unilateral ptosis isolated unilateral or bilateral medial rectus weakness |
2. Conditions which may be nuclear: bilateral total third nerve palsy bilateral ptosis bilateral internal ophthalmoplegia isolated single muscle involvement (except levator and superior rectus) |
3. Obligatory nuclear lesions: unilateral third nerve palsy with contralateral superior rectus and bilateral partial ptosis bilateral third nerve palsy (with or without internal ophthalmoplegia) associated with spared levator function |
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