目的：评估两种基于Scheimpflug成像技术原理的国产Scansys和进口Sirius三维眼前节分析系统，对近视患者眼前节生物参数测量的差异性与一致性。

方法：系列病例研究，选取2022-05/10沈阳爱尔卓越眼科医院诊断为轻中度近视拟行屈光手术(包括全飞秒、半飞秒、TransPRK、ICL植入术)患者103例103眼(所有患者均右眼入组)。收集患者术前角膜曲率(Km)、中央角膜厚度(CCT)、前房深度(ACD_Endo.)、前房角(ACA)、前房容积(ACV)、白到白(WTW)。

结果：Scansys和Sirius测量术前Km为42.88(41.54，44.60)、42.98(41.56，44.52)D，CCT为541.52±29.08、549.55±29.62μm，ACA为42.70°±2.67°、46.63°±5.13°，WTW为12.10±0.60、11.98±0.47mm，差异均有统计学意义(均P<0.01)。Scansys和Sirius测量ACV为194.26±31.06、191.47±25.65mm³，ACD_Endo.为3.40(3.17，3.57)、3.43(3.19，3.56)mm，差异均无统计学意义(均P>0.05)。两种仪器测量Km、CCT、ACA、ACD_Endo.、ACV、WTW值区间范围小，平均差异接近0，95%LoA线外点比例均<5%，一致性较好。

结论：Scansys和Sirius对眼前节参数测量结果差异较小，一致性较好，临床上可以相互参考替代。Scansys理论上可以用来推算ICL型号，或可成为眼前节参数测量的一种新选择。

METHODS: In this case series study, 103 cases(103 eyes)that underwent pre-refractive surgery(including small incision lenticule extraction, femtosecond laser-assisted in situ keratomileusis, transepithelial photorefractive keratectomy and implantable contact lens implantation)at Aier Excellent Eye Hospital from May 2022 to October 2022 were recruited. Preoperative keratometry(Km), central corneal thickness(CCT), anterior chamber depth(ACD_Endo.), anterior chamber angle(ACA), anterior chamber volume(ACV), white to white(WTW)of patients were recorded.

RESULTS: The results of Km, CCT, ACA, and WTW measured by Scansys and Sirius were 42.88(41.54, 44.60)and 42.98(41.56, 44.52)D,(541.52±29.08)and(549.55±29.62)μm, 42.70°±2.67° and 46.63°±5.13°, 12.10±0.60 and 11.98±0.47 mm, respectively, showing the difference was statistically significant(all P<0.01). The ACV measured by Scansys and Sirius was 194.26±31.06 and 191.47±25.65 mm³, and ACD_Endo. was 3.40(3.17, 3.57)and 3.43(3.19, 3.56)mm, with no statistically significant difference(all P>0.05). The range of Km, CCT, ACA, ACD_Endo., ACV and WTW values measured by the two instruments was small, with an average difference close to zero, and the points percentage of 95% limits of agreement(LoA)was <5%, which is of good consistency.

CONCLUSIONS: Scansys and Sirius have small differences and good agreement in the parameters, which can be replaced by each other in clinical practice. Scansys could theoretically be used to extrapolate the implantable contact lens model or could be a new option for anterior segment parameter measurements.