The electroretinogram in infants and young children.

Electroretinography (ERG), especially when combined with visual evoked potential recording, can provide valuable information to the pediatric clinician assessing a young child with nystagmus who appears not to see. ERG changes are described in clinical conditions affecting rod and/or cone function, vitreoretinal disease, maculopathies, and disorders involving the retina and central nervous system. The role of ERG in monitoring treatment, and in excluding retinal disease prior to eye surgery, is also covered.