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Surgical decisions in chronic angle-closure glaucoma

E C Gelber, D R Anderson

Archives of Ophthalmology (Chicago, Ill. : 1960)

|September 1, 1976

Summary

For chronic angle-closure glaucoma, iridectomy is often best without visual field loss. With visual field loss, trabeculectomy may offer better glaucoma control if pressure is hard to manage medically.

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Area of Science:

Ophthalmology
Glaucoma Research
Surgical Ophthalmology

Background:

Chronic angle-closure glaucoma (CACG) is a significant cause of irreversible vision loss.
Treatment decisions for CACG, particularly regarding iridectomy versus trabeculectomy, remain a subject of clinical importance.
Understanding the impact of visual field loss on surgical outcomes is crucial for optimizing patient care.

Purpose of the Study:

To compare the efficacy of iridectomy and trabeculectomy in managing chronic angle-closure glaucoma.
To evaluate the influence of preoperative visual field loss on the outcomes of these surgical interventions.
To assess surgical complications associated with iridectomy and trabeculectomy in this patient cohort.

Main Methods:

Retrospective analysis of 57 eyes diagnosed with chronic angle-closure.
Comparison of visual field status, intraocular pressure control, and surgical complications between iridectomy and trabeculectomy groups.
Evaluation of treatment success based on visual field improvement and glaucomatous control.

Main Results:

Eyes with visual field loss showed less improvement following iridectomy compared to those without.
Trabeculectomy provided more satisfactory glaucoma control than iridectomy in eyes with existing visual field loss.
No significant difference in surgical complications was observed between the two surgical procedures in this series.

Conclusions:

Iridectomy is recommended for most chronic angle-closure cases without visual field loss, especially when medically controllable.
In the presence of visual field loss, iridectomy may be suitable if preoperative medical control is easily achieved.
Trabeculectomy appears to be the preferred surgical option for patients with visual field loss and medically uncontrolled pressure, irrespective of gonioscopic findings.

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