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[Computed tomography findings in convergent strabismus fixus]

M Ohta1, H Iwashige, T Hayashi

  • 1Department of Ophthalmology, Teikyo University School of Medicine, Tokyo, Japan.

Nippon Ganka Gakkai Zasshi
|August 1, 1995
PubMed
Summary

X-ray computed tomography (CT) effectively diagnosed convergent strabismus fixus by revealing an elongated eyeball and displaced lateral rectus muscle. Early diagnosis and treatment are possible for this eye movement disorder.

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Area of Science:

  • Ophthalmology
  • Radiology
  • Medical Imaging

Background:

  • Convergent strabismus fixus is an eye movement disorder that can lead to significant visual impairment.
  • Early diagnosis and treatment are crucial for managing progressive esotropia.

Observation:

  • X-ray computed tomography (CT) scans were performed on the eyeball and orbit in patients with progressive esotropia and high myopia, as well as in a control group with normal visual acuity.
  • CT imaging focused on the lens and medial and lateral rectus muscles, with slices parallel to the German horizontal plane.

Findings:

  • Patients with progressive esotropia exhibited significantly longer axial eye lengths compared to normal controls.
  • Characteristic CT findings included an elongated eyeball, mechanical contact between the eyeball and the lateral orbital wall, and inferior displacement of the lateral rectus muscle.

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Implications:

  • CT imaging can identify the cause of eye movement disorders in convergent strabismus fixus.
  • The findings suggest that the condition results from lateral rectus muscle weakness due to compression against the orbital wall.
  • Early detection and intervention are supported by these diagnostic capabilities.