[Treatment of dyslexia with occlusion or prisms].

In the German speaking part of Switzerland in the last few years there have been two singular trends in orthoptic and surgical treatment of dyslexia. Professor Otto performs occlusion to achieve dominance in one eye. Of 300 cases treated he has operated on 147 for an exodeviation. Dr. Pestalozzi prescribes prismes based on the Polatest to reach perfect binocular vision. In 175 cases he operated on 43 dyslectic children for an esodeviation. Both treatments are critically analysed and refused.