Painless, Pupil-Sparing but Otherwise Complete Oculomotor Nerve Paresis Caused by Basilar Artery Aneurysm

Incidence and Etiologies of Acquired Third Nerve Palsy Using a Population-Based Method

“…This is in line with findings in prior studies that have reported pupil involvement in 14% to 38% of microvascular third nerve palsies, which is typically mild (usually ≤1 mm) . In addition, it has also been reported that compressive third nerve palsies, even from aneurysm, can sometimes present without pupil involvement . Therefore, anisocoria alone cannot definitively differentiate microvascular from compressive third nerve palsies, which supports many findings of prior studies.…”

“…1,[12][13][14] In addition, it has also been reported that compressive third nerve palsies, even from aneurysm, can sometimes present without pupil involvement. [15][16][17][18] Therefore, anisocoria alone cannot definitively differentiate microvascular from compressive third nerve palsies, which supports many findings of prior studies.…”

Incidence and Etiologies of Acquired Third Nerve Palsy Using a Population-Based Method

“…This is in line with findings in prior studies that have reported pupil involvement in 14% to 38% of microvascular third nerve palsies, which is typically mild (usually ≤1 mm) . In addition, it has also been reported that compressive third nerve palsies, even from aneurysm, can sometimes present without pupil involvement . Therefore, anisocoria alone cannot definitively differentiate microvascular from compressive third nerve palsies, which supports many findings of prior studies.…”

“…1,[12][13][14] In addition, it has also been reported that compressive third nerve palsies, even from aneurysm, can sometimes present without pupil involvement. [15][16][17][18] Therefore, anisocoria alone cannot definitively differentiate microvascular from compressive third nerve palsies, which supports many findings of prior studies.…”

Pupil-Sparing Oculomotor Nerve Palsy Caused by Upward Compression of a Large Posterior Communicating Artery Aneurysm

“…2,3,8,16,24) Seven patients had normal pupils among 51 patients with PCoA aneurysms manifesting as oculomotor nerve involvement, suggesting that the incidence of pupilsparing might be greater than previously appreciated in this group. 14) Pupil-sparing oculomotor nerve palsy in patients with PCoA aneurysms has been attributed to the short interval from the onset of symptoms to diagnosis, or to different points of compression.…”

Evaluation of Third Nerve Palsy in the Emergency Department

“…Although there has been one case report of a pupilsparing complete oculomotor palsy caused by a basilar apex aneurysm, it is generally accepted that patients over the age of 50 years with vasculopathic risk factors and complete pupil-sparing CN III palsy can be observed as outpatients without neuroimaging (6,33,37). This should be done in consultation with a neurologist or a neuroophthalmologist.…”

Incidence and Etiologies of Acquired Third Nerve Palsy Using a Population-Based Method

“…This is in line with findings in prior studies that have reported pupil involvement in 14% to 38% of microvascular third nerve palsies, which is typically mild (usually ≤1 mm) . In addition, it has also been reported that compressive third nerve palsies, even from aneurysm, can sometimes present without pupil involvement . Therefore, anisocoria alone cannot definitively differentiate microvascular from compressive third nerve palsies, which supports many findings of prior studies.…”

“…1,[12][13][14] In addition, it has also been reported that compressive third nerve palsies, even from aneurysm, can sometimes present without pupil involvement. [15][16][17][18] Therefore, anisocoria alone cannot definitively differentiate microvascular from compressive third nerve palsies, which supports many findings of prior studies.…”

Pupil-Sparing Oculomotor Nerve Palsy Caused by Upward Compression of a Large Posterior Communicating Artery Aneurysm

“…2,3,8,16,24) Seven patients had normal pupils among 51 patients with PCoA aneurysms manifesting as oculomotor nerve involvement, suggesting that the incidence of pupilsparing might be greater than previously appreciated in this group. 14) Pupil-sparing oculomotor nerve palsy in patients with PCoA aneurysms has been attributed to the short interval from the onset of symptoms to diagnosis, or to different points of compression.…”

Evaluation of Third Nerve Palsy in the Emergency Department

“…Although there has been one case report of a pupilsparing complete oculomotor palsy caused by a basilar apex aneurysm, it is generally accepted that patients over the age of 50 years with vasculopathic risk factors and complete pupil-sparing CN III palsy can be observed as outpatients without neuroimaging (6,33,37). This should be done in consultation with a neurologist or a neuroophthalmologist.…”

Incidence and Etiologies of Acquired Third Nerve Palsy Using a Population-Based Method

“…This is in line with findings in prior studies that have reported pupil involvement in 14% to 38% of microvascular third nerve palsies, which is typically mild (usually ≤1 mm) . In addition, it has also been reported that compressive third nerve palsies, even from aneurysm, can sometimes present without pupil involvement . Therefore, anisocoria alone cannot definitively differentiate microvascular from compressive third nerve palsies, which supports many findings of prior studies.…”

“…1,[12][13][14] In addition, it has also been reported that compressive third nerve palsies, even from aneurysm, can sometimes present without pupil involvement. [15][16][17][18] Therefore, anisocoria alone cannot definitively differentiate microvascular from compressive third nerve palsies, which supports many findings of prior studies.…”

Pupil-Sparing Oculomotor Nerve Palsy Caused by Upward Compression of a Large Posterior Communicating Artery Aneurysm

“…2,3,8,16,24) Seven patients had normal pupils among 51 patients with PCoA aneurysms manifesting as oculomotor nerve involvement, suggesting that the incidence of pupilsparing might be greater than previously appreciated in this group. 14) Pupil-sparing oculomotor nerve palsy in patients with PCoA aneurysms has been attributed to the short interval from the onset of symptoms to diagnosis, or to different points of compression.…”

Evaluation of Third Nerve Palsy in the Emergency Department

“…Although there has been one case report of a pupilsparing complete oculomotor palsy caused by a basilar apex aneurysm, it is generally accepted that patients over the age of 50 years with vasculopathic risk factors and complete pupil-sparing CN III palsy can be observed as outpatients without neuroimaging (6,33,37). This should be done in consultation with a neurologist or a neuroophthalmologist.…”