[Visual evoked potentials in pseudophakia]

Examinations of VEP were performed in 32 cases of pseudophakia (20 implants to the anterior, 12 to the posterior chamber). The impulses were light flashes and a reversible checkboard pattern. Normal records of VEP were obtained in 93 p.c. of cases with the use of a light flash and in 75 p.c. by applying a checkboard pattern. No correlation was found between the visual acuity and the VEP. The authors observed a shortening of the latency time of the N2 bend after implantation of the lens using the light flashes.