Analysis of the electro-oculograms of a series of normal subjects: Role of the lens in the development of the standing potential

The results of EOGs in normal subjects are analysed and compared with the values obtained for aphakics. The following conclusions are drawn: (1) The normal ratio is greater than 185 per cent., and usually above 200 per cent. (2) The potentials recorded depend upon the type of electrode employed. The operator places these in a uniform manner, determined by their shape. The test is independent of the magnitude of the potentials recorded. (3) Alteration in the retinal illumination employed is partially compensated for by variation in pupillary diameter. (4) The lens cannot be shown to contribute to the standing potential or to act as an electrical resistance to current flow.