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Related Experiment Videos

Optic disc shape in glaucoma

J B Jonas1, K I Papastathopoulos

  • 1University Eye Hospital, Erlangen, Germany.

Graefe'S Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Fur Klinische Und Experimentelle Ophthalmologie
|August 1, 1996
PubMed
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Optic disc shape shows minimal variation in glaucoma patients without high myopia. Highly myopic eyes exhibit significantly different optic disc morphology, impacting glaucoma diagnosis.

Area of Science:

  • Ophthalmology
  • Glaucoma Research
  • Optic Nerve Head Imaging

Background:

  • Glaucoma is a leading cause of irreversible blindness.
  • Optic disc morphology is a key indicator in glaucoma assessment.
  • Understanding optic disc shape variations is crucial for diagnosis and management.

Purpose of the Study:

  • To evaluate the morphometric characteristics of the optic disc in various glaucoma subtypes.
  • To compare optic disc shape between glaucomatous and non-glaucomatous eyes, including those with high myopia.
  • To determine the significance of optic disc shape in the pathogenesis and diagnosis of glaucoma.

Main Methods:

  • Morphometric analysis of optic disc shape using stereo optic disc photographs.
  • Inclusion of patients with primary open-angle glaucoma, secondary open-angle glaucoma, normal-pressure glaucoma, and high myopia with glaucoma.

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  • Comparison with visually normal subjects and non-glaucomatous subjects with high myopia.

    • Main Results:

    • Optic disc shape demonstrated limited interindividual variability in eyes with myopia < -8 D.
    • No significant difference in optic disc shape was observed between normal and glaucomatous eyes with myopia < -8 D.
    • Highly myopic eyes showed significantly more oval and obliquely oriented optic discs compared to other groups.

    Conclusions:

    • Optic disc shape is relatively consistent in non-highly myopic eyes, regardless of glaucoma status.
    • Optic disc shape alone is not a primary factor in the pathogenesis or diagnosis of most glaucomas, excluding highly myopic cases.
    • High myopia significantly alters optic disc morphology, necessitating consideration in glaucoma evaluation.