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Intraocular pressure and visual field defects

L Bojić1, B Cerovski, M Ivanisević

  • 1Department of Ophthalmology, Split University Hospital, Croatia.

Acta Medica Croatica : Casopis Hravatske Akademije Medicinskih Znanosti
|February 16, 1999
PubMed
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Maintaining visual field in open-angle glaucoma patients requires therapeutic intraocular pressure (IOP) levels below 16 mm Hg. This study found higher IOP in patients with progressive visual field loss.

Area of Science:

  • Ophthalmology
  • Glaucoma Research
  • Intraocular Pressure Management

Background:

  • Open-angle glaucoma is a leading cause of irreversible blindness.
  • Intraocular pressure (IOP) is a primary modifiable risk factor for glaucoma progression.
  • Understanding the relationship between IOP levels and visual field stability is crucial for patient management.

Purpose of the Study:

  • To investigate the association between intraocular pressure (IOP) levels and the progression of visual field defects in patients with open-angle glaucoma.
  • To determine the therapeutic IOP threshold required for preserving visual field function.

Main Methods:

  • A five-year observational study was conducted on 108 patients diagnosed with open-angle glaucoma.
  • Patients were categorized into two groups: those with non-progressive visual field changes and those with progressive visual field changes.

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  • Intraocular pressure (IOP) levels were measured and recorded for all participants.

    • Main Results:

    • Patients with progressive visual field defects exhibited a significantly higher mean IOP (19.9 +/- 2.9 mm Hg) compared to those with non-progressive changes (15.8 +/- 2.6 mm Hg).
    • The average age of patients with progressive visual field loss was 68.7 years, while those with non-progressive changes averaged 65.2 years.
    • A clear correlation was observed between elevated IOP and the rate of visual field deterioration.

    Conclusions:

    • Therapeutic intraocular pressure (IOP) levels below 16 mm Hg are essential for preventing visual field progression in open-angle glaucoma.
    • Maintaining IOP below this threshold may be critical for long-term visual function preservation in glaucoma patients.
    • These findings underscore the importance of aggressive IOP management in clinical practice.