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Related Experiment Videos

Rate and pattern of neuroretinal rim area decrease in ocular hypertension and glaucoma.

P J Airaksinen1, A Tuulonen, H I Alanko

  • 1Department of Ophthalmology, University of Oulu, Finland.

Archives of Ophthalmology (Chicago, Ill. : 1960)
|February 1, 1992
PubMed
Summary

Neuroretinal rim area loss, a key indicator of glaucoma progression, was studied over 10 years. Significant rim area decrease was observed in most patients with ocular hypertension and glaucoma, highlighting the need for early detection and intervention.

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Area of Science:

  • Ophthalmology
  • Optometry
  • Glaucoma Research

Background:

  • Neuroretinal rim area is a critical parameter in assessing glaucoma progression.
  • Longitudinal studies are essential to understand the rate and pattern of neuroretinal rim area changes over time.

Purpose of the Study:

  • To determine the rate and pattern of neuroretinal rim area change in normal subjects, patients with ocular hypertension, and patients with glaucoma over a 5 to 15-year follow-up period.
  • To identify factors associated with neuroretinal rim area loss.

Main Methods:

  • Measurement of neuroretinal rim areas in 123 eyes from normal subjects, patients with ocular hypertension, and patients with glaucoma.
  • Statistical analysis of rim area change over a mean follow-up of 10 years.

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Main Results:

  • A statistically significant decrease in neuroretinal rim area was observed in 57% of ocular hypertension patients and 79% of glaucoma patients.
  • Yearly rim area loss was 0.23% in normal subjects, 0.47% (stable) and 2.75% (deteriorating) in ocular hypertension, and 3.47% in deteriorating glaucoma.
  • The pattern of rim area change was linear in 49%, episodic in 22%, and curvilinear in 29% of patients with significant rim area decrease.

Conclusions:

  • Neuroretinal rim area loss is a common finding in patients with ocular hypertension and glaucoma.
  • The rate of rim area loss is higher in patients with deteriorating glaucoma and ocular hypertension compared to normal subjects.
  • While initial rim area influences loss rate, 90% of variation is unexplained by measured factors, suggesting complex disease mechanisms.