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Updated: Mar 28, 2026

Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity
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Surgery for Supranuclear Monocular Elevation Deficiency.

Michael C Struck1, Jennifer C Larson1

  • 1a Department of Ophthalmology , University of Wisconsin - Madison , Madison , WI , USA.

Strabismus
|December 17, 2015
PubMed
Summary
This summary is machine-generated.

Contralateral superior rectus recession offers a simple surgical solution for monocular elevation deficiency (MED). This approach improved head posture and alignment in all patients, presenting a reliable alternative to other procedures.

Keywords:
Double elevator palsyKnapp procedurehypertropiainnervational surgerymonocular elevation deficiencystrabismus surgerysupranuclear palsy

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Area of Science:

  • Ophthalmology
  • Strabismus Surgery
  • Pediatric Ophthalmology

Background:

  • Monocular elevation deficiency (MED) presents challenges in achieving normal eye alignment.
  • Supranuclear MED cases often involve hypotropia and limited elevation.
  • Preoperative symptoms include compensatory head posture and ptosis.

Purpose of the Study:

  • To report a novel surgical approach for supranuclear monocular elevation deficiency (MED).
  • To evaluate the efficacy of contralateral superior rectus recession in treating MED.

Main Methods:

  • Retrospective review of 5 patients with supranuclear MED.
  • Surgery involved near maximal superior rectus recession on the contralateral sound eye.
  • Patients had intact Bell's phenomenon and negative forced duction testing.

Main Results:

  • All patients showed improved compensatory head posture and primary position alignment.
  • Average superior rectus recession was 9.7 mm, with a mean follow-up of 4.8 years.
  • Postoperative vertical deviation was orthotropic, hypotropic, or overcorrected in the studied patients.

Conclusions:

  • Contralateral superior rectus recession is a simple and reliable surgical alternative for supranuclear MED.
  • This technique may offer decreased complications compared to the Knapp transposition procedure.
  • It presents a potentially less complicated option for future surgical interventions.