Ruptured Paraclinoid Aneurysm Presenting as Retrobulbar Optic Neuropathy

Paraclinoid internal carotid artery (ICA) aneurysms arise between the roof of the cavernous sinus and the posterior communicating artery. Their rupture rate is estimated at 11.4-25%. Ruptured paraclinoid aneurysms typically present with subarachnoid haemorrhage; a new visual deficit as a presenting complaint is distinctly uncommon

Fluctuating nature of an orbital venous-lymphatic anomaly in association with intracranial vascular malformations: a classical presentation.

Venous-lymphatic anomalies (VLA) are rare and benign congenital lesions of the lymphatic system, composed of endothelial-lined lymphatic cysts. They are most frequently located in the region of the head and neck, and represent 4% of all orbital masses. In those patients with extensive orbital VLAs, a strong association with intracranial vascular anomalies has been reported. Factors known to suddenly increase the size of these lesions include upper respiratory tract infections or intralesional haemorrhage; however, complete spontaneous regression is rare. We report on the classic presentation of a patient with a fluctuating right orbital VLA in association with an intracranial cavernous malformation and intracranial developmental venous anomaly

Timing of Non-Arteritic Anterior Ischemic Optic Neuropathy (NAION) After Modern Cataract Extraction (.pdf)

To study the prevalence of non-arteritic anterior ischemic optic neuropathy (NAION) and its temporal relationship with modern cataract surgery