中华眼底病杂志

中华眼底病杂志

硅油填充眼眼轴长度浸润式B型超声引导下分段声速测量与光学激光生物仪测量结果比较

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目的 对比观察硅油填充眼眼轴长度(AL)浸润式B型超声引导下分段声速测量与光学激光生物测量仪(Lenstar LS900)测量结果,探讨浸润式B型超声引导下分段声速测量对于硅油填充眼AL测量的准确性。 方法 前瞻性研究。拟行硅油取出、白内障摘除及人工晶状体植入手术的35例患者38只眼纳入研究。所有患眼均合并不同程度的白内障。手术前采用MD-2300S型眼科A型和(或)B型超声行浸润式B型超声引导下分段声速测量法测量患眼AL。AL为角膜厚度、前房深度、晶状体厚度、硅油泡的表观长度、硅油泡下水层厚度的总和。同时采用Lenstar LS900测量患眼AL。所有患眼均顺利完成硅油取出、白内障摘除及人工晶状体植入手术,随诊至手术后3个月均未见并发症发生。手术后3个月,重复应用Lenstar LS900测量患眼AL。对比观察两种测量方法测得AL数据的差异及一致性。 结果 38只眼中,手术前经Lenstar LS900测得AL31只眼;因晶状体混浊、AL超过Lenstar LS900测量范围未能测得AL7只眼。31只眼的平均AL为(24.12±1.70)mm。手术后3个月经Lenstar LS900测得AL36只眼;AL超过Lenstar LS900测量范围未能测得AL 2只眼。36只眼的平均AL为(24.45±1.89)mm。患眼手术前后AL差值为(0.02±0.07)mm,差异无统计学意义(t=1.752,P>0.05)。手术前所有患眼均经浸润式B型超声引导下分段声速测量法测得AL。患眼平均AL为(24.87±2.52)mm。与手术前Lenstar LS900测得AL比较,两者差值为(−0.00±0.09)mm,差异无统计学意义(t=−0.205,P>0.05);与手术后3个月Lenstar LS900测得AL比较,两者差值为(−0.02±0.11)mm,差异无统计学意义(t=−1.280,P>0.05)。两种测量方法测量硅油填充眼的AL具有良好的一致性( $\bar d$ =−0.003,95%可信区间为−0.19~0.18,P<0.05)。 结论 浸润式B型超声引导下分段声速测量与Lenstar LS900测量对硅油填充眼AL测量结果一致性良好;浸润式B型超声引导下分段声速测量可对硅油填充眼AL进行准确测量。

Objective To evaluate the accuracy of the biometry using immersion B scan and partial coherence interferometry (Lenstar LS900) for the axial length (AL) of silicone oil-filled eyes respectively. Methods Thirty-five silicone oil-filled eyes (38 patients) were included in the study. All of these eyes underwent silicone oil removal, cataract extraction and intraocular lenses implantation. The AL of all the silicone oil-filled eyes was measured with A/B-scan ultrasound and Lenstar LS900 before operation and with Lenstar LS900 after operation. The measured distance was compared respectively. The method of immersion B-scan guided with respective sonic velocity. AL was the sum of corneal thickness, anterior chamber depth, lens thickness, the apparent length of oil bubble (velocity values 996 m/s), the depth of the water layer beneath the oil bubble. Results Thirty-one eyes were measured with Lenstar LS900 before silicone oil removal, and the mean AL was (24.12±1.70) mm, 7 eyes failed to get the results before the operation; 36 eyes were measured with Lenstar LS900 after silicone oil removal, and the mean AL was (24.45±1.89) mm. All eyes were measured with B-scan before silicone oil removal, and the mean AL was (24.87±2.52) mm. The difference (31 eyes) of AL measurement before silicone oil removal by two methods was (−0.00±0.09) mm; the difference (31 eyes) between pre- and post-surgical AL measurement with Lenstar LS900 was (0.02±0.07) mm; the difference (36 eyes) between pre-surgical AL measured with B-scan and post-surgical AL measured with Lenstar LS900 was (−0.02±0.11) mm. All the differences were not statistically significant (t=−0.205, 1.752, −1.280; P>0.05). The consistency of the results measured by two methods was well in Bland-Ahamn analysis. Conclusions Measurement results of AL between immersion B-scan guided with respective sonic velocity and Lenstar LS900 are high repeatability on silicone oil-filled eyes. The AL of silicone oil-filled eyes can be measured reliably by immersion B-scan guided with respective sonic velocity.

关键词: 轴长度,眼; 硅油类; 超声检查/方法

Key words: Axial length, eye; Silicone Oils; Ultrasonography/methods

引用本文: 武斌, 陈松, 刘洋辰, 李岩, 高建民, 李君慧, 何广辉. 硅油填充眼眼轴长度浸润式B型超声引导下分段声速测量与光学激光生物仪测量结果比较. 中华眼底病杂志, 2017, 33(6): 605-608. doi: 10.3760/cma.j.issn.1005-1015.2017.06.012 复制

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