Management of sixth nerve palsy and Duane's retraction syndrome.

In sixth nerve palsy the role of a muscle-transposing procedure, as compared with a recession-resection procedure, is discussed, and reference is made to the special problems when the palsy is the result of hydrocephalus with frequently an associated A phenomenon. In Duane's retraction syndrome, surgical treatment should be limited as a general rule to a restoration of binocular function in the primary position with elimination of the compensatory head posture, because of an understanding of the underlying anomaly of innervation.

Neurological abnormalities in congenital amaurosis of Leber. Review of 30 cases.

A retrospective study was made of 30 children with Leber's amaurosis (congenital retinal blindness). 24 presented with severe visual impairment, typical ophalmological findings, and absent electroretinograms. 6 other children, though presenting with marked visual loss and absent electroetinograms were later shown to be less severely affected. Some of the more severely affected children had associated neurodevelopmental or renal abnormalities.