[The port-hole method in the treatment of congenital nystagmus].

The so-called "port-holes method" is a bilateral peripherical occlusion. It was used for the treatment of 38 cases of congenital nystagmus; the duration of treatment was 5 years. The method produces improvement of visual acuity and diminution of the nystagmus, evidenced by E.N.G. The method is of easy practice, and well-accepted by the children.