Comparison of refractive outcomes using immersion ultrasound biometry and IOLMaster biometry
Comparison of refractive outcomes using immersion ultrasound biometry and IOLMaster biometry
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DOI：
10.1111/j.1442-9071.2009.02091.x
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发表时间：
2009-08-01
影响因子：
4
通讯作者：
Goggin, Michael
中科院分区：
文献类型：
--
作者：
Landers, John;Goggin, Michael
背景：IOLMaster使用部分相干干涉法测定眼轴长度。本研究的目的是比较屈光度的结果进行了测量术前浸没超声波和IOLMaster biometry.Methods：患者被招募从那些谁经历了白内障手术，在过去的12个月由一名外科医生在伊丽莎白女王医院（55例55只眼）。每例患者均通过浸没超声和IOLMaster测量眼轴长度。使用SRK-T公式确定目标屈光度，并计算浸入式超声和IOLMaster的术后屈光度差异量。结果：与浸没式超声相比，IOLMaster法测得的眼球长度更长（23.37 ± 0.87 vs. 23.25 ± 0.90 mm，t = 4.83; P < 0.0001）。但前房深度相似。术后，使用IOLMaster时最终屈光结果为远视比目标屈光度高0.01 +/- 0.63 D，而使用浸没式超声时近视比目标屈光度高0.25 +/- 0.73 D（t = 3.83; P < 0.0001）。当使用IOLMaster时，75%的患者的目标屈光度在0.5 D以内，93%在1.0 D以内，而使用浸没式超声时，分别有49%和85%在0.5 D和1.0 D以内（KH（2）= 8.34; P = 0.04）。使用IOLMaster进行的生物测量比浸没超声产生更可预测的屈光结果，患者的等效球镜更可能接近其目标屈光度。
P>Background:The IOLMaster determines axial length using partial coherence interferometry. This study was designed to compare the refractive outcomes of patients who had been measured preoperatively by both immersion ultrasound and IOLMaster biometry.Methods:Patients were recruited from those who had undergone cataract surgery during the preceding 12 months by one surgeon at The Queen Elizabeth Hospital (55 eyes from 55 patients). Each patient underwent measurement of axial length by immersion ultrasound and the IOLMaster. Target refraction was determined using an SRK-T formula and the amount that this differed postoperative refraction was calculated for immersion ultrasound and the IOLMaster. These results were then compared.Results:Eyes measured longer by the IOLMaster method compared with immersion ultrasound (23.37 +/- 0.87 vs. 23.25 +/- 0.90 mm, t = 4.83; P < 0.0001). However anterior chamber depth was the similar. Postoperatively, final refractive outcome was 0.01 +/- 0.63 dioptres (D) more hypermetropic than the target refraction when using the IOLMaster compared with 0.25 +/- 0.73 D more myopic when using immersion ultrasound (t = 3.83; P < 0.0001). Seventy-five per cent of patients were within 0.5 D of target refraction and 93% were within 1.0 D when the IOLMaster was used, compared with 49% and 85% within 0.5 and 1.0 D respectively when using immersion ultrasound (KH(2) = 8.34; P = 0.04).Conclusions:Biometry performed using the IOLMaster produces a more predictable refractive outcome than immersion ultrasound, with patients' spherical equivalent more likely to be closer to their target refraction.