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[High myopia with esotropia fixus]

L Y Kong1, F H Zhang

  • 1Department of Ophthalmology, Tong Ren Hospital, Beijing.

[Zhonghua Yan Ke Za Zhi] Chinese Journal of Ophthalmology
|September 1, 1993
PubMed
Summary

This study investigates high myopia with esotropia fixus, finding medial rectus contracture and lateral rectus thinning. Surgical intervention, including tenotomy, yielded positive outcomes for these complex eye conditions.

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Area of Science:

  • Ophthalmology
  • Ocular Motility
  • Myopia Research

Background:

  • High myopia is a significant refractive error.
  • Esotropia fixus is an eye condition characterized by the eyeball being fixed in adduction.
  • The progressive onset of esotropia fixus in middle age among individuals with childhood high myopia is notable.

Observation:

  • The eyeball is fixed in marked adduction.
  • Forced duction tests are positive.
  • Electromyography reveals normal innervation of medial and lateral recti muscles.

Findings:

  • Surgical findings include medial rectus contracture and lateral rectus thinning.
  • Histopathological examination shows medial rectus degeneration and fibrosis.
  • The precise etiology remains unclear.

Implications:

  • Surgical tenotomy of the medial rectus, potentially with inferior rectus tenotomy, and lateral rectus tendon fixation to the lateral orbital rim can achieve satisfactory corrective results.
  • Understanding the pathophysiology of esotropia fixus in high myopia is crucial for effective management.
  • Further research into the etiology of this condition is warranted.

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