Anterior clinoid mucocoele presenting as progressive fluctuating visual loss mimicking inflammatory optic neuropathy.

Optic nerve lesions usually produce monocular visual loss, and in compressive optic neuropathies, gradual vision loss is the more usual presentation. Mucocele in the anterior clinoid process is a rare cause of compressive optic neuropathy that can lead to monocular visual loss. A 19-year-old Sri Lankan girl presented with progressive, painless fluctuating right-sided monocular visual loss over 1-year duration.

Subacute sclerosing panencephalitis: a rare cause of acute cortical visual impairment in an adult.

Adult onset subacute sclerosing panencephalitis (SSPE) after the third decade of life is rare and the manifestations can mimic disorders such as dysmyelinating and metabolic disorders. This case report presents a patient with acute binocular visual impairment in his fifth decade as the first manifestation of SSPE. This is preventable with immunisation against measles.