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Related Experiment Videos

Quantitative visual field and optic disc correlates early in glaucoma

W M Hart, M Yablonski, M A Kass

    Archives of Ophthalmology (Chicago, Ill. : 1960)
    |December 1, 1978
    PubMed
    Summary
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    Ocular hypertension can lead to glaucoma. Early detection of visual field changes, like reduced isopter areas, can predict glaucoma development in high-risk patients.

    Area of Science:

    • Ophthalmology
    • Glaucoma Research
    • Visual Field Testing

    Background:

    • Ocular hypertension is a risk factor for developing primary open-angle glaucoma.
    • Early detection of glaucomatous changes is crucial for timely intervention.
    • Visual field testing is a standard method for monitoring glaucoma progression.

    Purpose of the Study:

    • To investigate the relationship between visual field parameters and the development of glaucomatous defects in patients with ocular hypertension.
    • To determine if specific visual field measurements can predict future visual field loss.

    Main Methods:

    • Retrospective analysis of 70 eyes with ocular hypertension and normal initial visual fields.
    • Follow-up examinations included visual field testing to detect glaucomatous defects.

    Related Experiment Videos

  • Measurement of central (I2e) and peripheral (I4e) isopter areas and cup-disc ratios.

    • Main Results:

    • Glaucomatous visual field defects developed in 25 out of 70 followed eyes.
    • Eyes with ocular hypertension showed smaller central isopter areas (I2e) compared to normal controls.
    • Reductions in isopter areas (I4e and I2e) correlated with increased cup-disc ratios upon visual field loss.
    • A smaller peripheral isopter area (I4e) prior to visual field loss indicated a higher likelihood of future visual field decline.

    Conclusions:

    • Reduced isopter areas, particularly the peripheral I4e, are significant indicators of impending glaucomatous visual field loss in ocular hypertensive patients.
    • Visual field testing, specifically isopter area measurements, can aid in predicting glaucoma development.
    • Monitoring visual field changes in ocular hypertension is essential for risk stratification.