Dissociated hypertropia: surgical treatment.

Dissociated hypertropia can be corrected surgically by recession of the superior rectus muscle or resection of the inferior rectus muscle. The usual "maximum" amount of surgery of 4-5 mm is the minimum amount of surgery necessary for correction of this cosmetically disfiguring strabismus. Complications relate to narrowing of the palpebral fissure width and restrictive hypotropia" both following marked inferior rectus muscle resections.