Horror Fusionis Revisited

Abstract

In the past three years, we have had the opportunity to review and follow four cases of what we feel can be diagnosed as Horror Fusionis.

All four patients reported symptoms of diplopia since their first decade and under no circumstances could we demonstrate any type of foveal fusion. All four had had an accommodative esotropia diagnosed during early childhood.

We reviewed the literature back to 1935, Bielshowsky's first description of this entity, and found relatively few cases reported. In most cases it was felt that surgery and/or orthoptic therapy may have been the cause for the lack of fusion and lack of suppression.

None of our patients had had surgery or orthoptic therapy prior to the onset of their diplopia.

• Horror Fusionis
• diplopia
• accommodative esotropia