[Phase-difference haploscope with a varioobjective for the measurement of aniseikonia (author's transl)].

The author reports on a technical modification of Author's phase-difference haploscope. Through the employment of a varioobjective pictures of size variation ranging from +60 percent to -30 percent could be continually used for the measurement of aniseikonia. Through this the range of fusion of patients with aniseikonia could be measured under conditions of aniseikonia. The importance of the variation of the size of pictures for the measurement of range of fusion in strabismus is pointed out.