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Related Experiment Video

Updated: Jul 7, 2026

Rotating the Intraocular Lens to Prevent Posterior Capsular Opacification in Cataract Surgeries
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[Diplopia after sub-Tenon's anesthesia for cataract surgery].

P Merino1, N Muñoz-Sanz, P Gómez-de-Liaño

  • 1Departamento de Oftalmología, HGU Gregorio Marañón, Madrid, Spain. jacoboym@telefonica.net

Archivos De La Sociedad Espanola De Oftalmologia
|March 31, 2006
PubMed
Summary

Sub-Tenon

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Area of Science:

  • Ophthalmology
  • Surgical Complications
  • Neuro-ophthalmology

Background:

  • Cataract surgery is a common procedure.
  • Sub-Tenon's anesthesia is a frequently used anesthetic technique.
  • Post-operative strabismus is a potential complication.

Purpose of the Study:

  • To investigate the clinical presentation, management, and outcomes of strabismus following sub-Tenon's anesthesia for cataract surgery.
  • To identify the affected muscles and the nature of the deviation.

Main Methods:

  • Retrospective analysis of eight patients who developed strabismus post-cataract surgery.
  • Diagnosis using cover test, prism measurements, and active/passive ductions.
  • Assessment of deviation type (vertical/horizontal) and magnitude.

Main Results:

  • Incomitant diplopia developed immediately post-surgery in all patients.
  • Restrictive strabismus, predominantly vertical, was diagnosed.
  • Botulinum toxin was ineffective in most cases; strabismus surgery or prisms were required for resolution.

Conclusions:

  • Sub-Tenon's anesthesia can lead to restrictive strabismus and persistent diplopia.
  • The inferior rectus muscle is frequently involved.
  • Surgical intervention is often necessary for successful treatment, achieving good outcomes.