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The normal optic nerve head.

N M Sing1, S F Anderson, J C Townsend

  • 1VA Greater Los Angeles Healthcare System, Sepulveda Ambulatory Care Center & Nursing Home, California, USA. ntamsing@hotmail.com

Optometry and Vision Science : Official Publication of the American Academy of Optometry
|July 6, 2000
PubMed
Summary
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Optic nerve head appearance varies by race and age, influencing normal variations. Understanding these differences is crucial for accurate eye care and patient management.

Area of Science:

  • Ophthalmology
  • Optic Nerve Head Anatomy

Background:

  • Optic nerve head appearance exhibits significant inter-individual variability.
  • Factors like age and race are critical in defining normal optic nerve head variations.

Purpose of the Study:

  • To review current literature on normal optic nerve head variations.
  • To highlight the influence of demographic factors on optic nerve head appearance.

Main Methods:

  • Comprehensive literature search and review of recent studies on the optic nerve head.

Main Results:

  • Cup-to-disc ratio varies significantly across different races.
  • Age-related nerve fiber loss increases the cup-to-disc ratio.
  • Congenital optic nerve size correlates with cup-to-disc ratio and nerve fiber count.

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Conclusions:

  • Technological advancements have refined understanding of normal optic nerve head parameters over 30 years.
  • This knowledge aids eye care practitioners in making informed patient management decisions.