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31.05.2022 | original article

Effectiveness of laser peripheral iridoplasty in the treatment of acute primary angle closure

verfasst von: MD, PhD Anh Tuan Vu, MD, PhD Associate Professor Thi Van Anh Bui, MD Lan Anh Mai, MD Thanh Tung Hoang, MD Le Trung Nguyen

Erschienen in: Spektrum der Augenheilkunde

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Summary

Background

Acute primary-angle closure (APAC) is a common condition in Asian populations due to pupillary block and anterior chamber angle closure. Argon laser peripheral iridoplasty (ALPI) involves laser impacts, the thermal effect of which is to retract the periphery of the iris, subsequently widening the iridocorneal angle and facilitating drainage.

Purpose

To evaluate the effectiveness and safety of ALPI as a treatment for APAC.

Patients and methods

An uncontrolled, interventional and prospective study was conducted including 26 eyes of 24 patients with APAC treated by ALPI at the Vietnam National Eye Hospital from December 2019 to August 2020. Intraocular pressure (IOP) before and after ALPI, visual acuity, cornea, pupil, and irido-cornea angle were analyzed. Angle width in Shaffer grades was assessed. Angle configuration was also evaluated using angle opening distance (AOD500), trabecular-iris angle (TIA) measured in UBM images.

Results

The mean IOP before ALPI of the group decreased from 44.8 ± 9.0 mm Hg to 27.6 ± 8.4 mm Hg at 15 min, 21.4 ± 8.7 mm Hg at 30 min, 16.5 ± 8.9 mm Hg at 60 min, and 13.1 ± 9.1 mm Hg at 120 min after the procedure. Before treatment, almost affected eyes had closed angles or very narrow angles. After the treatment, there was an increase in the angle width, and the mean TIA increased from 0.13 ± 0.68° to 17.2 ± 12.3°; the mean AOD500 increased from 0.5 ± 2 μm to 123.9 ± 92.5 μm (p < 0.001). One eye had a peripheral corneal burn.

Conclusion

It appears that ALPI is effective and safe in controlling IOP in acute primary-angle closure.
Literatur
9.
Zurück zum Zitat Pham Thi Thu Thuy. Applied research laser iridoplasty in the treatment of primary angle closure glaucoma. Thesis. Hanoi Medical University, Vietnam. 2012. Pham Thi Thu Thuy. Applied research laser iridoplasty in the treatment of primary angle closure glaucoma. Thesis. Hanoi Medical University, Vietnam. 2012.
Metadaten
Titel
Effectiveness of laser peripheral iridoplasty in the treatment of acute primary angle closure
verfasst von
MD, PhD Anh Tuan Vu
MD, PhD Associate Professor Thi Van Anh Bui
MD Lan Anh Mai
MD Thanh Tung Hoang
MD Le Trung Nguyen
Publikationsdatum
31.05.2022
Verlag
Springer Vienna
Erschienen in
Spektrum der Augenheilkunde
Print ISSN: 0930-4282
Elektronische ISSN: 1613-7523
DOI
https://doi.org/10.1007/s00717-022-00522-z