Risk of non-arteritic anterior ischaemic optic neuropathy (NAION) after cataract extraction in the fellow eye of patients with prior unilateral NAION.

Aim: To determine the risk of non-arteritic anterior ischaemic optic neuropathy (NAION) after cataract extraction (CE) in the fellow eye of patients with prior unilateral NAION.

Design: Retrospective, cohort study.

Methods: Medical records of patients with NAION evaluated in our institution between 1 January 1986 and 31 December 2001 were reviewed to determine the onset of NAION and the time of CE.

Choroidal neovascular membrane associated with optic nerve coloboma in a patient with CHARGE association.

Purpose: To report a patient with CHARGE association (coloboma, heart disease, choanal atresia, growth retardation, genital hypoplasia, and ear abnormalities) who developed a choroidal neovascular membrane in association with an optic nerve coloboma.

Design: Interventional/observational case report.

Method: A 21-month-old boy with CHARGE association developed a grayish choroidal neovascular membrane associated with lipid exudation, subretinal fluid, and retinal hemorrhage at the temporal edge of his right optic nerve coloboma.

Subperiosteal orbital hemorrhage as initial manifestation of Christmas disease (factor IX deficiency).

Purpose: To report a case of subperiosteal orbital and subgaleal hemorrhage with optic nerve compromise in a patient with a factor IX deficiency.

Design: Interventional case report.

Methods: A 5-year-old male presented 10 days after mild trauma with progressive left-sided scalp swelling, proptosis, and visual loss.