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Related Experiment Videos

Perimetric aspects of optic nerve aging.

M Zingirian1

  • 1Clinica Oculistica, Università di Genova, Italy.

Metabolic, Pediatric, and Systemic Ophthalmology (New York, N.Y. : 1985)
|January 1, 1989
PubMed
Summary

Perimetry testing assesses visual system efficiency and detects optic nerve damage, particularly ischemic changes common in older adults. Different perimetry methods precisely identify and quantify visual field defects, aiding in diagnosis and monitoring.

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Medical Imaging

Background:

  • Perimetry is crucial for evaluating visual system function.
  • Optic nerve damage, especially ischemic, impacts visual fields.
  • Aging naturally reduces light sensitivity.

Purpose of the Study:

  • To detail the diagnostic capabilities of various perimetry techniques.
  • To highlight perimetry's role in detecting optic nerve dysfunction.
  • To explain perimetric findings in aging and disease.

Main Methods:

  • Manual kinetic perimetry for sectorial/global defects.
  • Manual static perimetry for defect depth.
  • Automated static perimetry for density and follow-up.

Main Results:

  • Perimetry identifies visual field deterioration from optic nerve changes.
  • Ischemic optic nerve issues yield characteristic perimetric findings.
  • Aging causes a physiological decline in light sensitivity.

Conclusions:

  • Perimetry is essential for diagnosing and monitoring visual field loss.
  • Different perimetry types offer complementary diagnostic information.
  • Optic nerve health is a key determinant of visual field integrity.

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