[The correction of high AC/A ratio non-accommodative esotropia with straight-top bifocals]

82 juvenile cases of high AC/A ratio non-accommodative esotropia were treated with straight-top bifocals. The esotropia at near was corrected and the high AC/A ratio was controlled and gradually reduced with improved visual functions. The authors deemed the straight-top bifocals effective for correction of this type of esotropia and early utilization helped avoid the onset of amblyopia, monocular inhibition and abnormal retinal correspondence.