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In vivo Structural Assessments of Ocular Disease in Rodent Models using Optical Coherence Tomography
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Axial length and optic disc size in normal eyes.

C Oliveira1, N Harizman, C A Girkin

  • 1New York University School of Medicine, 310 East 14th Street suite 304, New York, NY 10003, USA.

The British Journal of Ophthalmology
|September 22, 2006
PubMed
Summary

Optic disc area is larger in Black individuals and correlates with longer axial length. This finding is important for understanding glaucoma risk and disease mechanisms.

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Area of Science:

  • Ophthalmology
  • Optometry
  • Medical Imaging

Background:

  • Optic disc size is a critical factor in glaucoma diagnosis.
  • Axial length is a key ocular biometric parameter.

Purpose of the Study:

  • To examine the association between optic disc area and axial length.
  • To compare these metrics between white and Black individuals with normal eyes.

Main Methods:

  • Ocular biometry using A-scan ultrasonography.
  • Optic disc imaging with confocal scanning laser ophthalmoscopy.
  • Statistical analysis using univariate and multivariate models.

Main Results:

  • Black subjects exhibited significantly larger optic disc areas than white subjects.
  • A weak but significant positive correlation was found between optic disc area and axial length.
  • Race was also independently associated with optic disc area.

Conclusions:

  • Larger optic disc area is linked to longer axial length and African ancestry.
  • These findings may influence glaucoma pathophysiology and risk assessment strategies.