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Related Experiment Videos

Perimetric defects after a single acute angle-closure glaucoma attack.

L Bonomi1, M Marraffa, G Marchini

  • 1Ospedale di Borgo Trento, Clinica Oculistica, Università degli Studi di Verona, Piazzale Stefani 1, I-37126 Verona, Italy.

Graefe'S Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Fur Klinische Und Experimentelle Ophthalmologie
|December 14, 1999
PubMed
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An acute attack of angle-closure glaucoma often causes visual field defects, primarily affecting the upper nasal quadrants. These defects may be reversible, with some patients showing normal visual fields after treatment.

Area of Science:

  • Ophthalmology
  • Visual Science

Background:

  • Angle-closure glaucoma is a condition that can lead to vision loss.
  • The impact of acute glaucoma attacks on visual fields requires further investigation.

Purpose of the Study:

  • To assess the effects of an acute angle-closure glaucoma attack on visual field integrity.
  • To identify specific patterns and affected areas within the visual field post-attack.

Main Methods:

  • Computerized perimetry (Humphrey 630 perimeter, 30-2 program) was used to examine 53 eyes.
  • Visual fields were assessed 36-48 hours after acute glaucoma attack remission.
  • Perimetry was repeated after at least one month in a subset of 22 eyes.

Main Results:

  • Perimetric defects were observed in 85% (45/53) of eyes, predominantly generalized or sectoral.

Related Experiment Videos

  • The upper nasal quadrants and the 9-21 degree eccentric area were most frequently affected.
  • Complete visual field normalization occurred in 7 of 22 eyes upon re-examination after one month.

    • Conclusions:

    • Acute angle-closure glaucoma attacks frequently result in generalized or mixed visual field defects.
    • These perimetric defects demonstrate potential reversibility.
    • The upper visual field and mid-peripheral areas (9-21 degrees) are most vulnerable to damage.