Spontaneous hyphaema arising from a strand of persistent pupillary membrane.

A case is reported of spontaneous hyphaema arising from a persistent strand of vascularised pupillary membrane. This strand, and an aneurysmal dilatation from which haemorrhage occurred, were illustrated by fluorescein angiography. The embryogenesis of pupillary membranes is discussed and the literature is reviewed with reference to spontaneous hyphaema.