Ocular Syphilis Presenting As Non-arteritic Anterior Ischemic Optic Neuropathy.

Syphilis is a sexually transmitted disease caused by the spirochetal bacteria Treponema pallidum. It can cross the blood-brain barrier within days of the infection, causing neurosyphilis and ocular syphilis at any stage of the disease. Ocular syphilis can manifest in any part of the eye but usually as posterior uveitis and pan-uveitis or various types of inflammatory or immune-mediated optic neuritis. Misdiagnosing ocular syphilis as a non-infectious disease has been reported even when seen by ophthalmologists due to the wide variety of possible presentations. In this case report, we describe a case of ocular syphilis that presented with a non-arteritic anterior ischemic optic neuropathy (NA-AION), which to our knowledge, has not been described before in the literature.

Bilateral Optic Nerve Sheath Meningioma with Intracanalicular and Intracranial Component in a 25-year-old Saudi Patient.

Bilateral optic nerve sheath meningioma is rare. A meningioma is a benign neoplastic lesion from meningothelial cells of the meninges. They usually involve the intracanalicular portion of the optic nerve but may extend into the optic canal and through it to occupy the intracranial space. We present a case of 25-year-old Saudi female with bilateral optic nerve sheath meningioma. The diagnosis was delayed more than six years from initial symptoms.