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Glaucoma-like discs with subsequent increased ocular pressures.

B Schwartz1, G Tomita, T Takamoto

  • 1Department of Ophthalmology, New England Medical Center Hospitals, Boston, MA 02111.

Ophthalmology
|January 1, 1991
PubMed
Summary
This summary is machine-generated.

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Glaucoma-like optic discs can precede elevated intraocular pressure (IOP) by years. Early signs like nerve fiber layer loss may indicate future glaucoma development, even with initially normal IOP.

Area of Science:

  • Ophthalmology
  • Optometry
  • Glaucoma Research

Background:

  • Glaucoma is often associated with elevated intraocular pressure (IOP).
  • Early detection of glaucoma-like optic discs is crucial for timely intervention.
  • Normal ocular pressure is typically defined as less than 21 mmHg.

Observation:

  • Four patients presented with glaucoma-like optic discs but normal visual fields and IOP (<21 mmHg).
  • These individuals were monitored without treatment.
  • Initial ophthalmoscopy detected the characteristic disc changes.

Findings:

  • Elevated IOP (≥21 mmHg) developed in all patients after an average of 8.1 years.
  • Prior to IOP increase, two patients exhibited retinal nerve fiber layer loss.

Related Experiment Videos

  • One patient showed optic disc hemorrhages before IOP elevation.

    • Implications:

    • Suggests that optic disc and nerve fiber layer abnormalities may precede IOP elevation in some glaucoma cases.
    • Proposes two hypotheses: subclinical pressure abnormalities or independent events causing disc changes and later IOP rise.
    • Highlights the potential for glaucoma development even with initially normal intraocular pressure.