The inadvertent injection of gas beneath the retina in a pseudophakic eye.

Gas injected through the pupil to tamponade a detached retina in a pseudophakic eye inadvertently made its way beneath the retina and augmented the detachment. A transparent membrane posterior to an iris-supported lens prevented the gas from entering the vitreous and diverted it laterally behind the iris, to the ciliary body, where is dissected between layers of ciliary epithelium and entered the subretinal space.