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Research Paper | Ophthalmology | Cambodia | Volume 13 Issue 5, May 2024 | Rating: 5 / 10
Location-Based Success Rates of Nd:YAG Laser Peripheral Iridotomy in Patients with Primary Angle Closure Disease and Primary Angle Closure Glaucoma at Khmer Soviet Friendship Hospital, Cambodia
Sophal HENG [3] | Chheng Y HAM [3] | Andrew WHITE
Abstract: Purpose: Aims to determine the optimal location for Nd:YAG laser peripheral iridotomy (LPI) based on the success rate at Khmer Soviet Friendship Hospital during the period from 2021 to 2023. Methods: This retrospective observational study included 100 eyes of 62 patients diagnosed with PAC, PACG, or PACS, all of which were treated with Nd:YAG LPI, with iridotomy locations categorized into four quadrants: inferonasal, inferotemporal, superonasal, and superotemporal. Results: In the study, which evaluated 100 eyes undergoing Nd:YAG laser peripheral iridotomy (LPI), it was found that 59% were left eyes and 41% were right eyes. The distribution of iridotomy locations was 45% superotemporal, 34% inferotemporal, 13% superonasal, and 8% inferonasal. Diagnoses included 46% PAC, 23% PACG, and 31% PAC suspect (PACS). Post-LPI, 94% of eyes achieved an IOP of ?21 mmHg, with a mean IOP of 14.7 ? 5.67 mmHg. The average number of laser shots was 11.75 ? 6.91, and 69% of treatments were completed in a single session. Particularly noteworthy, in the inferotemporal quadrant, the location of LPI demonstrated a notably high success rate, with 92.9% of cases achieving success in one session, highlighting a statistically significant association P-value of less than 0.001 (P < 0.001). Conclusion: This study highlights the importance of placing LPI in the inferotemporal quadrant for patients with PAC and PACG. Doing so could boost the effectiveness of iridotomy procedures and enhance treatment outcomes.
Keywords: location of laser iridotomy, laser iridotomy, primary angle closure, primary angle closure glaucoma, angle-closure suspect
Edition: Volume 13 Issue 5, May 2024,
Pages: 1146 - 1150