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Ocular presentation of sphenoid mucocele

Prepageran N, Subramaniam KN, Krishnan GG, Raman R

Orbit, 2004 Mar;23(1):45-7.
PMID: 15513020

A sphenoid mucocele often presents late due to its deep-seated anatomical site. It has a varied presentation, due to its close relationship to the cavernous sinus and the base of the skull. It can present initially to the ophthalmologist with ocular complaints. In the present paper, the authors present two cases of sphenoid mucocele, one with an isolated third and one with an isolated sixth cranial nerve palsy.

Matched MeSH terms: Oculomotor Nerve Diseases/diagnosis*
Multimodality Techniques in Microsurgical Clipping as the Gold Standard Treatment in the Management of Basilar Tip Aneurysm: A Case Series

Seng LB, Yamada Y, Rajagopal N, Mohammad AA, Teranishi T, Miyatani K, et al.

Asian J Neurosurg, 2018 11 22;13(4):1148-1157.
PMID: 30459884 DOI: 10.4103/ajns.AJNS_159_18

Introduction: Basilar aneurysms represent 5%-7% of all intracranial aneurysms. The main goal of open surgery is to achieve complete obliteration of the aneurysmal sac using minimal invasive technique while emphasizing on avoidance of complication.
Materials and Methods: We performed a retrospective cohort study of nine cases of unruptured basilar tip aneurysm referred to the Fujita Health University Banbuntane-Hotokukai Hospital, Japan. The objective of the study was to analyze the surgical outcomes of unruptured basilar tip aneurysm.
Results: Nine patients with unruptured basilar tip aneurysm were referred to our hospital between 2015 and 2017. The median size of the aneurysm and age were 4.00 mm (interquartile range [IQR] = 3.25-6.75 mm) and 58 years (IQR = 54-70 years), respectively. Five patients (55.6%) were presented with multiple intracranial aneurysms. Surgical adjuncts such as intraoperative neuromonitoring, intraoperative indocyanine green (ICG) angiography with dual-image videoangiography (DIVA), and neuroendoscope were used. Two patients developed transient postoperative oculomotor nerve palsy which resolved spontaneously. The median duration of surgery and days of hospitalization were 292 min (IQR = 237.5-350.5 min) and 12 days (IQR = 12-25 days), respectively. There was no mortality recorded in this case series.
Conclusion: Microsurgical clipping of basilar tip aneurysm is safe in unruptured basilar tip aneurysm with a low risk of postoperative mortality or morbidity. All complications reported in this case series were transient with no long-term sequalae. The improved safety profile of microsurgical technique is due to the availability of intraoperative neuromonitoring, neuroendoscope, ICG, and DIVA. The application of multimodality technique in neurovascular surgery has also helped to achieve complication avoidance. The obliteration of the aneurysmal sac helps to restore the laminar blood flow in the bifurcation and distal blood vessels and improves the brain perfusion.

Matched MeSH terms: Oculomotor Nerve Diseases
Transient loss of power of accommodation in 1 eye following inferior alveolar nerve block: report of 2 cases

Ngeow WC, Shim CK, Chai WL

J Can Dent Assoc, 2006 Dec;72(10):927-31.
PMID: 17187708

Unintended intravascular injection from inferior alveolar nerve blocks can result in frustrating distant complications affecting such structures as the middle ear and eyes. Possible complications affecting the eyes include blurring of vision, diplopia, mydriasis, palpebral ptosis and amaurosis (temporary or permanent). In this article, we present a complication that has been reported only rarely. Two patients developed transient loss of power of accommodation of the eye resulting in blurred vision after routine inferior alveolar nerve blocks on the ipsilateral side. Clear vision returned within 10-15 minutes after completion of the blocks. The possible explanation for this phenomenon is accidental injection into the neurovascular bundle of local anesthetic agents, which were carried via the blood to the orbital region. This resulted in paralysis of a branch of cranial nerve III, the short ciliary nerves that innervate the ciliary muscle, which controls accommodation.

Matched MeSH terms: Oculomotor Nerve/drug effects*
Fulltext "Why do I always see double?" A misdiagnosed case of ocular myasthenia gravis for 10 years

Yousuf UA, Yashodhara BM, Thanigasalam T, Ting HS

BMJ Case Rep, 2014 May 02;2014.
PMID: 24792021 DOI: 10.1136/bcr-2013-203488

A 58-year-old man presented with diplopia and partial ptosis for 10 years. It was non-progressive in nature, despite inadequate medical attention the patient received from non-specialists/general practitioners. He did not have fatigability or diurnal variation in weakness and was clinically stable without exacerbations of disease for a decade. He did not have features of Graves's disease, oculopharyngeal dystrophy, cranial nerve paralysis, polymyositis and stroke. The possibility of an atypical presentation of myasthenia gravis (MG) was considered and the patient was evaluated. Ice pack test was negative, Cogan's lid twitch (CLT) test was positive and high titres of acetylcholine receptor antibodies (AChR Ab) suggestive of MG were found. He was treated accordingly with a very good response.

Matched MeSH terms: Oculomotor Nerve Diseases/diagnosis*
Photophobia in a blind eye after removal of a progressive orbital optic glioma with denervation

Loh CK, Weis B, van Velthoven V, Reiff C, Rössler J

J Neurol Sci, 2015 Nov 15;358(1-2):522-4.
PMID: 26474792 DOI: 10.1016/j.jns.2015.09.375

Optic glioma (OPG) accounts for 4-8% of all brain tumors in children. En-block removal of intraorbital tumor is recommended in cases with disfiguring exophthalmos and impaired vision. Surgical resection of intraorbital optic nerve (ON) poses the risks of permanent ptosis and globe atrophy. We present here the case of a 4-year-old boy with exophthalmos and near blindness due to an intraorbital OPG. Despite chemotherapy he showed progressive exophthalmos and vision loss. Bony orbital decompression with ON transection temporally reduced his exophthalmos. OPG resection was required later for recurrence of his exophthalmos secondary to tumor progression. Post operatively, he had preserved oculomotor nerve functions but developed globe ischemia. Unusually, his ischemic globe caused him to have pain and severe photophobia, which later lead to enucleation. Photophobia has been reported in blind patients. Animal models and MRI functional imaging showed activation of trigeminal pathway during photophobia in completely transected ON. However, the exact neuro-ophthalmology pathway requires further study.

Matched MeSH terms: Oculomotor Nerve
Herpes Zoster Ophthalmicus with Orbital Apex Syndrome-Difference in Outcomes and Literature Review

Lim JJ, Ong YM, Wan Zalina MZ, Choo MM

Ocul Immunol Inflamm, 2018;26(2):187-193.
PMID: 28622058 DOI: 10.1080/09273948.2017.1327604
Matched MeSH terms: Oculomotor Nerve Diseases/diagnosis; Oculomotor Nerve Diseases/drug therapy; Oculomotor Nerve Diseases/virology
Fulltext Loss of Contralateral Upper Limb Motor Evoked Potential Due to Occlusion of the Internal Carotid Artery in Microsurgical Clipping of Basilar Tip Aneurysm

Seng LB, Yasuhiro Y, Rajagopal N, Mohammad AA, Takao T, Kyosuke M, et al.

Asian J Neurosurg, 2019 4 3;14(1):295-299.
PMID: 30937059 DOI: 10.4103/ajns.AJNS_157_18

The motor evoked potential (MEP) monitoring is routinely used as an adjunct in the microsurgical clipping of anterior circulation. We describe a case of unruptured basilar tip aneurysm treated with microsurgical clipping developed loss in MEP recording of the left abductor pollicis brevis (APB) following clipping of basilar tip aneurysm. A 58-year-old man was referred to the Fujita Health University Banbuntane-Hotokukai Hospital, Nagoya, Aichi, Japan, with incidental finding of unruptured 6.5 mm basilar tip saccular aneurysm. He underwent right anterior temporal approach of basilar tip aneurysm clipping. The internal carotid artery (ICA) was mobilized laterally to allow direct visualization of the neck of the basilar tip aneurysm. Following the application of temporary clip and subsequently permanent clip at the neck of the aneurysm, the MEP signal was lost in the left APB. The temporary clip was immediately removed. Dual-image videoangiography (DIVA) showed a filling defect in the right ICA and a branch of middle cerebral artery (MCA). The MEP was absent for about 23 minutes and the amplitude improved to only 75% of the baseline recording at 38 minutes till the end of the surgery. A repeat DIVA showed good flow within the right ICA and MCA. Glasgow coma score was 15/15 on postoperative day 1 and there was no gross motor or sensory deficit except right oculomotor nerve palsy with complete recovery at 6 months follow-up. This is the first reported ICA occlusion due to its mobilization in microsurgical clipping of basilar tip aneurysm. The use of neuromonitoring especially MEP is essential even in the posterior circulation aneurysm surgery especially when excessive manipulation of the ICA is unavoidable. When performing intraoperative angiography for aneurysm surgery, it is prudent to detect any filling defect within the surrounding vessels.

Matched MeSH terms: Oculomotor Nerve Diseases