Occlusion therapy in amblyopia with eccentric fixation.

Occlusion of the sound eye (conventional occlusion) introduced by Buffon (I 743) was the only treatment for amblyopia until Bangerter (I953) introduced occlusion of the amblyopic eye (non-conventional or inverse occlusion) combined with pleoptic treatment in cases of amblyopia with eccentric fixation. Mackensen, Kroner, and Postic (I965), von Noorden (I965), Posti6 (I966), Borgmann and Dielefeld (I967), and Ver Lee and Iacobucci (I967) found conventional occlusion of the sound eye to be as good as pleoptic treatment. On the other hand, Arruga (I962) and Cibis and Windsor (I967) favoured non-conventional (inverse) occlusion of the amblyopic eye. Brinker and Katz (I963) introduced red-filter occlusion to avoid the shortcomings of pleoptic treatment.