[Eight years' prismatic treatment of convergent alternating squint (author's transl)].

Two groups of 178 Children, treated and untreated by prisms, were examined 1 year after strabotomy. The advantage of prism treatment is clear from the 22% normalization of binocularity (compared with 11%), 51% normalization of retinal correspondence (compared with 22%), and 93% good cosmetic result (compared with 68%). However, in spite of prism treatment, binocular vision remains defective in 71% of cases of squint. A reexamination of the same persons 3.6 years on average after the operation shows the same tendency in both groups (with and without prism treatment): impairment of binocularity, decrease on angle of squint, increase in number of persons with good cosmetic result but defective binocular vision (77% of prism patients).