| 摘要: |
| 目的：研究超声生物显微镜对正常前房和浅前房人群不同体位状态下眼房角结构的比较。方法：前瞻性研究。共纳入2020年7月至2020年12月在温州医科大学附属眼视光医院杭州院区接受白内障术前检查的患者64例（64只眼）。根据周边房角深度，将受试患者分为大于1/3CT的正常前房组（34只眼）与小于等于1/3CT的浅前房组（30只眼）。用水囊式超声生物显微镜分别采集卧位和坐位时患者上、下、鼻、颞四个方位的房角影像；测量并比较两组两种体位每个方位的房角开放度数（AA）、房角开放距离（AOD500）。利用IOLMaster 700测得前房深度（ACD）、晶状体厚度（LT）和眼轴长度（AL）。结果：正常前房组和浅前房组，当卧位变为坐位时，上方房角AA、AOD500变窄，差异均有统计学意义（P<0.001），下方房角AA、AOD500变宽，差异均有统计学意义（P<0.001），鼻颞侧房角AA、AOD500变化差异无统计学意义（P>0.05）。浅前房组从卧位变为坐位时，上方AA、AOD500变化量比正常前房组更窄（P=0.048；P=0.046），下方AA、AOD500变化量比正常前房组更宽（P=0.044；P=0.031）。浅前房组LT较正常前房组厚，差异具有显著统计学意义（P<0.001）。结论：体位变化会对房角开放程度产生影响，晶状体悬韧带的松弛和重力作用起到重要作用。当卧位变为坐位时，正常前房和浅前房人群均会表现上方房角变窄，下方房角变宽，但浅前房人群房角变化程度要显著大于正常前房人群。浅前房的老年白内障患者在诊疗时应更充分考虑检查时体位对房角检查结果的影响。 |
| 关键词: 超声生物显微镜 体位 房角开放度数 房角开放距离 |
| DOI： |
| 投稿时间：2021-10-26修订日期：2022-06-07 |
| 基金项目:温州市科研项目(Y20190628) |
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| Positional Effect on the Anterior Chamber Angle: Assessment by Ultrasound BiomicroscopyGuanshun Yu, Jinjin Yu, Tingting Yan, Haiqun He, Jinhai Huang. |
| YU GUANSHUN,YU JINJIN,YAN TINGTING,HE HAIQUN,HUANG JINHAI |
| () |
| Abstract: |
| Objective: To investigate the position-related changes of anterior chamber angle anatomy in normal eyes and shallow anterior chamber eyes. Methods: A prospective study was conducted. Sixty-four eyes from 64 patients were divided into two groups by peripheral anterior chamber depth: the normal group(>1/3CT) and the shallow anterior chamber group(≤1/3CT). The anterior chamber angles of the eyes were measured in supine and sitting positions by ultrasound biomicroscopy (UBM) with balloon technology (superior, inferior, nasal and temporal quadrants). Statistical analysis was used to evaluate positional changes in AA, AOD500. Anterior chamber depth、lens thickness and axial length were obtained by optical biometer IOLMaster 700. Results: In both two groups, the angle anatomy was narrower superiorly (P<0.001) and wider inferiorly (P<0.001) in the sitting position, but no positional differences in nasal or temporal angle anatomy were observed (P>0.05). The superior positional differences of the shallow anterior chamber group were greater than those of the normal group (P=0.048;P=0.046). The inferior positional differences of the shallow anterior chamber group were wider than those of the normal group (P=0.044;P=0.031).The lens thickness of the shallow anterior chamber group was significantly thinner than that of the normal group (P<0.001). Conclusion: The angle anatomy was affected by different exam position. Both the relaxation of zonule and the gravity play an important role in the positional differences of the angle anatomy. The angle anatomy was narrower superiorly and wider inferiorly while the subject was sitting in both two groups, but the positional differences of the shallow anterior chamber group were greater than those of the normal group. In the clinical diagnosis, more attention should be paid to the positional effect of the patients with shallow anterior chamber in angle anatomy examination. |
| Key words: ultrasound biomicroscopy position AA AOD 500. |
