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Clinical Examination of the Optic Nerve

  • Scott J. Fudemberg
  • Yuanjun Zhao
  • Jonathan S. Myers
  • L. Jay Katz
Chapter

Abstract

The optic nerve is a confluence of retinal ganglion cell axons that traverse the scleral canal to exit the eye. It ends as these axons merge with axons of the contralateral optic nerve at the optic chiasm. The optic nerve can be divided into (1) the intraocular part, comprising the retinal ganglion cell layer, the retinal nerve fiber layer, and the optic disc, and (2) the retrobulbar part, consisting of the intraorbital portion (about 25 mm long), the intracanalicular part within the osseous optic canal (4-20 mm), and the intracranial portion (about 10 mm), at which point the nerve fibers merge into the optic chiasm and the post-chiasmal optic tracts.

Keywords

Optic Nerve Optic Disc Retinal Nerve Fiber Layer Optic Nerve Head Retinal Nerve Fiber Layer Thickness 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Scott J. Fudemberg
    • 1
  • Yuanjun Zhao
    • 2
  • Jonathan S. Myers
    • 3
  • L. Jay Katz
    • 4
  1. 1.Glaucoma DepartmentWills Eye Institute, Jefferson Medical CollegePhiladelphiaUSA
  2. 2.Wills Eye InstitutePhiladelphiaUSA
  3. 3.Spaeth/Katz/Myers, P.C., Wills Eye InstitutePhiladelphiaUSA
  4. 4.Jefferson Medical College, Wills Eye InstitutePhiladelphiaUSA

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