COMLICATIONS OF PROPHYLACTIC ND: YAG LASER PERIPHERAL IRIDOCTOMY FOR PRIMARY ANGLE CLOSURE GLAUCOMA

Đỗ Tấn1,, Nguyễn Văn Cường2
1 Central Eye Hospital
2 Military Hospital 103, Vietnam Military Medical University

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Abstract

Objectives: To evaluate the complications of prophylactic Nd: YAG laser peripheral iridotomy for primary angle closure glaucoma. Patients and Methods: 124 eligible eyes were recruited into the study from 3 centers Vietnam National Eye Hospital, Ha Dong Eye Hospital and Eye department of 103 Military Hospital from 1/2018 to 11/2019. Results: All of 124 eyes achieved good results with 100% IOP control after 1 year of follow-up. However, there was a few complications. Hyphema occurred in 22 eyes (17.7%) mainly grade 1 (18/22 eyes) more commonly when laser was performed at the distal peripheral position (77.3%). Peripheral corneal burns occurred in 14 eyes (11.2%), of which 10 eyes with 1 shot, 4 eyes with 2 shots, more often in the shallow anterior chamber (ACD <2.5mm) (85.7)%), and at the position close to the base of the iris (92.8%). 24 hours after the procedure, IOP was 20.07±3.56 (16-24mmHg), increased on average of 4.68±2.41 (3-7mmHg). IOP increase was more important in the group of eyes with thickened iris (72.7%) Anterior uveitis occurred in 24/124 eyes (19.35%), at mild level Tyndall (+), completely improved after 3.47± 1.36 (3-5 days), more on eyes with thickened iris pigment (75%). Obstruction of the peripheral iridotomy occurred in 17/124 eyes (13.7%), more in the group of eyes with thick iris (76.5%). and in small iridotomy (< 150µm) (100%). Conclusion: Nd: YAG laser peripheral iridectomy is quite safe, although there is a certain rate of complications, which were mild and can be easily treated without affect on the final result.

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References

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