1 3-7002rn8/6&)6-0455$(Y2 00 ... 2 trast) cues were superimposed; they were gra... 3 an experiment to determine if orthoptics/visio... 4 FIG. 3. Representative convergence performanc... 5 training instruments have become available... 6 Fig. 5. Convergence performance of two represen... 7 FIG. b. Asthenopsa and accommodative amplitude for three co... 8 increasing the speed, the final goal being rapi... 9 June 198...