目的：用Pentacam眼前节分析仪测量近视眼的角膜前后表面曲率半径，并探讨其与眼轴、等效球镜度数的相关性。方法：近视眼136例267眼，应用Pentacam测量角膜前后表面曲率半径，IOLmaster测量眼轴，分析角膜曲率半径与眼轴、等效球镜度数之间的相关性。 结果：角膜前表面曲率半径（7.80±0.22mm）、后表面曲率半径（6.36±0.22mm）均符合正态分布。角膜前后表面曲率半径与等效球镜度数无相关性（P＞0.05），与眼轴呈正相关（r s=0.564，P＜0.001，rs=0.614，P＜0.001）。AL/CR与等效球镜度数呈负相关（rs=-0.740，P＜0.001）。按照等效球镜度数分为轻度近视（≤-0.50D且＞-3.00D）、中度近视（≤-3.00D且＞-6.00D）、高度近视（≤-6.00D） 3组后，仅眼轴（P＜0.001）和AL/CR（P＜0.001）各组之间的差异有统计学意义，角膜前后表面曲率半径的差异均无统计学意义。 结论：近视眼角膜曲率半径与眼轴相关，是仅次于眼轴的、与近视眼形成相关的因素。

AIM:To investigate corneal radius(CR) using rotating Scheimpflug camera (Pentacam) in myopia eyes, and to determine its relationship with axial length(AL) and spherical equivalent refraction(SER). METHODS: Totally 136 myopic case (267 eyes) were selected randomly. Anterior and posterior CR were determined using Pentacam, and AL was measured by IOL master. Data were stratified by refractive state. The relationships among CR, AL and SER were correlated by Spearman correlation. RESULTS: Normal distributions of anterior and posterior CR were revealed by Kolmogorov-Smirnov tests. The CR was directly positively correlated with AL, and not correlated with SER. The AL/CR was negatively correlated with SER. In different refractive state groups, there were significant differences in the AL and AL/CR. CONCLUSION:The CR is correlated with AL. It is the second important biometric parameter related to myopia.