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Related Experiment Videos

Normal tension glaucoma: the value of predictive tests

K Yoshikawa1, T Inoue, Y Inoue

  • 1Eye Division of Olympia Medical Clinic, Tokyo, Japan.

Acta Ophthalmologica
|August 1, 1993
PubMed
Summary
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Clinical tests can help predict normal tension glaucoma progression. Abnormal results in outflow facility or intraocular pressure (IOP) monitoring indicate a higher risk of visual field defects.

Area of Science:

  • Ophthalmology
  • Glaucoma Research
  • Clinical Optometry

Background:

  • Normal tension glaucoma (NTG) is a progressive optic neuropathy.
  • Predicting disease progression in NTG is crucial for timely intervention.
  • Current methods for predicting NTG progression require further refinement.

Purpose of the Study:

  • To evaluate the predictive value of specific clinical tests for NTG progression.
  • To identify individuals with NTG at higher risk of visual field deterioration.

Main Methods:

  • Study included 54 patients with normal tension glaucoma.
  • Assessed outflow facility, intraocular pressure (IOP) changes after water drinking, and diurnal IOP variations.
  • Visual sensitivity was measured using the Octopus 201 over a 3- to 7-year period.

Related Experiment Videos

  • Progression defined by changes in visual field sensitivity.

    • Main Results:

    • Progression of visual field defects occurred in 38.5% of eyes with abnormalities in at least one clinical test.
    • Only 10.7% of eyes with normal test results showed progression (p < 0.04).
    • The three clinical tests demonstrated significant value in identifying eyes at risk.

    Conclusions:

    • Outflow facility, water provocative test, and diurnal IOP monitoring may help identify NTG patients at risk of progression.
    • These tests can aid in early detection and management strategies for normal tension glaucoma.