Ectopic cerebrospinal-like fluid from retrobulbar cysts as a possible cause of pediatric retinal detachment associated with optic disc coloboma: new implications for management.

Retinal detachment in adults with posterior segment coloboma is thought to be rhegmatogenous. Vitrectomy techniques are therefore used therapeutically. There is indirect evidence that subretinal fluid in retinal detachment, associated with optic nerve cavitation, is cerebrospinal fluid (CSF). We report 2 pediatric cases, referred for the management of coloboma-related retinal detachment, that provide direct evidence that the fluid is like CSF.