전방각이 얕은 환자에게 시행한 레이저홍채절개술 전후의 전방각 계측치의 변화
Changes in Anterior Segment Biometry by Laser Iridotomy in Eye With Shallow Anterior Chamber
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목적: 전방이 얕은 환자에서 주변홍채전유착의 유무가 레이저홍채절개술 후 전방각 깊이에 주는 영향을 알아보기 위하여 초음파생체 현미경을 이용하여 전방각 계측치의 변화를 분석하였다. 대상과 방법: 얕은 전방각과 주변홍채전유착 소견을 보이는 20명의 20안과 전방각은 얕지만 주변홍채전유착 소견을 보이지 않는 20명 의 20안을 대상으로 하였다. 전방각경검사, 초음파생체현미경검사를 레이저홍채절개술 전후로 시행하여 주변홍채전유착의 유무에 따 른 레이저홍채절개술 전후의 전방각 계측치들의 변화를 알아보았다. 결과: 주변홍채전유착이 있는 군과 없는 군 사이에 레이저홍채절개술 시행 전후의 전방각 계측치들 중에서 중심각막두께와 공막두께는 유의한 차이를 보이지 않았다(p＞0.05). 전방깊이, 전방각, 섬유주-홍채간거리, 전방각간거리 500은 두 군 모두에서 레이저홍채절개 술 시행 이후 유의하게 증가된 것으로 나타났다(p＜0.05). 그러나 전방각 계측치들의 증가는 두 군 간에 통계학적으로 유의한 차이는 없었다. 결론: 레이저홍채절개술이 주변홍채전유착의 유무에 관계없이 전방각 깊이를 증가시킬 수 있을 것으로 판단한다.
Abstract
Purpose: To identify the impact of the presence of peripheral anterior synechia (PAS) on the depth of the anterior segment in patients with a shallow anterior chamber after laser iridotomy (LI) by analyzing changes in the anterior segment biometry using ultrasound biomicroscopy (UBM). Methods: Twenty eyes of 20 patients with PAS and shallow anterior chamber, and another 20 eyes of 20 patients with shallow anterior chamber without PAS were studied. The changes in the anterior segment biometry for each group of patients were examined using gonioscopy and UBM before and after the LI. Results: The central corneal thicknesses and scleral thicknesses of the two groups did not show significant differences (p > 0.05). The anterior chamber depths, anterior chamber angles, trabecular meshwork-iris distances, and angle-opening distances 500 increased significantly after the peripheral LI (p < 0.05) in both groups. However, the difference in the increases in the anterior segment biometries between the two groups was not statistically significant. Conclusions: LI can increase the depth of the anterior chamber regardless of the presence of PAS.
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