目的：运用眼表综合分析仪Keratograph 5M、三维眼前节分析系统Pentacam、自动电脑验光仪KR.800、光学相干生物测量仪IOL Master及波前像差仪KR-1W五种不同仪器测量高龄人群白内障术前角膜曲率值，分析其差异性和一致性，为高龄人群白内障术前精确地计算人工晶状体度数做参考。

方法：前瞻性研究。选取2022年10月至2024年11月在我院眼科就诊的高龄白内障患者53例90眼，对所有患者分别采用Keratograph 5M、Pentacam、KR.800、IOL Master、KR-1W测量术眼角膜曲率值(K₁、K₂)，并计算出平均角膜曲率(mean keratometry，K_m)。

结果：Keratograph 5M与Pentacam、IOL Master的K₁、K₂、K_m值比较有差异(均P<0.05)，而与KR.800、KR-1W的K₁、K₂、K_m值比较无差异(均P>0.05)。Keratograph 5M与KR.800、Pentacam、IOL Master、KR-1W的K₁、K₂、K_m值均有一定相关性(r=0.913-0.987，均P<0.001)。Bland-Altman散点图中，显示Keratograph 5M与KR.800、KR-1W在测量角膜曲率值时一致性较好，与Pentacam、IOL Master的一致性较差。

结论：作为一种眼表综合分析仪，Keratograph 5M具有简单快捷、可重复性强、配合要求低等优点。在对高龄人群测量角膜曲率时，Keratograph 5M与KR.800、KR-1W一致性较好，可根据患者自身情况和配合程度相互替换，与Pentacam、IOL Master的一致性较差，使用中需结合临床实际情况加以判断。

METHODS:This prospective study included 53 elderly cataract in-patients(90 eyes)who were admitted to our ophthalmology department between October 2022 and November 2024. The corneal curvature values(K₁, K₂)of postoperative eyes were measured using Keratograph 5M, Pentacam, KR.800, IOL Master, and KR-1W, and the mean keratometry(K_m)was calculated.

RESULTS:Statistically significant differences were observed in K₁, K₂, and K_m values between Keratograph 5M and Pentacam, as well as between Keratograph 5M and IOL Master(all P<0.05), whereas no significant differences were found in K₁, K₂ and K_m between Keratograph 5M and KR.800 or KR-1W(all P>0.05). Pearson correlation analysis showed a certain correlation of K₁, K₂ and K_m obtained from Keratograph 5M with those from KR.800, Pentacam, IOL Master, and KR-1W(r=0.913-0.987, all P<0.001). Bland-Altman scatter plots demonstrated good consistency between Keratograph 5M and KR.800 or KR-1W, while its consistency with Pentacam and IOL Master was relatively poor.

CONCLUSION:As an ocular surface analyzer, Keratograph 5M offers advantages such as simplicity, rapid measurement, strong repeatability, and low patient cooperation requirements. In elderly patients, corneal curvature measurements obtained by Keratograph 5M demonstrated good consistency with those from KR.800 and KR-1W, making them interchangeable based on individual conditions and cooperation levels of patients. However, its consistency with Pentacam and IOL Master was relatively poor; therefore, clinical practical situation should be considered when selecting such measurement devices.