Distribution of axonal transport blockade by acute intraocular pressure elevation in the primate optic nerve head

H. A. Quigley, D. R. Anderson

Research output: Contribution to journalArticlepeer-review

Abstract

The authors studied the degree of axonal transport blockade in various areas of the optic nerve head with acute intraocular pressure (IOP) elevation in 19 squirrel monkey eyes. When IOP was raised to 20 to 50 mm. Hg for 7 hr., mild axonal transport blockade occurred in each area of the disk, most prominently in nerve fiber bundles of the superior pole. With 7 hr. IOP elevations between 50 and 90 mm. Hg, a somewhat greater degree of transport blockade occurred throughout the nerve head, although again the superior and inferior poles were somewhat more affected. The distribution of short term transport blockade, over the entire nerve head corresponds to the diffuse damage of acute glaucoma, but the pattern hints at the preference for damage near the poles of the disk seen in chronic glaucoma. However, before these results can be fully evaluated, further information is needed on axonal pathways through the optic nerve head and on the relationship between transport obstruction and ganglion cell death.

Original languageEnglish (US)
Pages (from-to)640-644
Number of pages5
JournalInvestigative Ophthalmology and Visual Science
Volume16
Issue number7
StatePublished - Dec 1 1977
Externally publishedYes

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems
  • Cellular and Molecular Neuroscience

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