角膜后前表面曲率半径比值的临床研究
Clinical study of posterior/anterior corneal curvature radii ratio
关照 1秦筱钰 2张嵘 3袁源智 2庄雪梅 1叶向彧3
作者信息
- 1. 福建省福州市第二总医院,福州 350007
- 2. 复旦大学附属中山医院厦门医院,厦门 361015
- 3. 福州眼科医院,福州 350007
- 折叠
摘要
目的 分析白内障患者的术前角膜后前表面曲率半径比值(B/F ratio)的分布特点及其与眼内生物参数的相关性.为优化常规白内障人工晶体(IOL)计算公式和角膜屈光术后IOL计算公式提供有用的信息.方法 将169名白内障患者的182只眼纳入了研究,对其术前的Pentacam眼前节分析仪和IOL Master的检查结果进行统计分析,并计算出每只眼的矫正角膜折射指数.结果 本研究人群B/F Ratio均值为(82.04±1.68)％,与年龄(rp=0.313,P＜0.001)、角膜屈光度(Kp,rp=0.567,P＜0.001)、角膜后表面曲率半径(R2,rp=0.566,P＜0.001)成正相关.矫正角膜屈光指数(N)为1.322 9～1.330 6(1.328 2±0.001 0).结论 本研究样本的B/F Ratio值、N,与国内外同类研究结果接近,比Gullstrand模型眼的B/F Ratio值、N小.当白内障患眼B/F Ratio较低时,需要考虑使用特殊的IOL屈光力计算公式.
Abstract
Objective To analyze the distribution characteristics of the posterior/anterior corneal curvature radii ratio(B/F ratio)in cataract patients and their correlation with intraocular biological parameters.To provide useful information for optimizing IOL calculation formula of routine cataract and with previous corneal refractive surgery.Methods One hundred and eighty-two eyes of 169 cataract patients were enrolled in the study.The preoperative results of Pentacam and IOL Master were statistically analyzed,and the corrected corneal refraction index of each eye was calculated.Results The average B/F ratio of the population in this study was(82.04+1.68)％,which was positively correlated with age(r p=0.313,P＜0.001),Kp(rp=0.567,P＜0.001)and posterior corneal curvature radius R2(r p=0.566,P＜0.001).Corrected corneal refractive index N was 1.322 9～1.330 6(1.328 2±0.001 0).Conclusion The B/F ratio of the population in this study and the corrected corneal refractive index N are similar to the results of related studies at home and abroad,and smaller than those of Gullstrand model eye.When the B/F ratio is low in cataract eyes,a special IOL refractive power calculation formula should be considered.
关键词
角膜后前表面曲率半径比值/白内障/角膜折射指数/角膜后表面屈光度Key words
B/F ratio/cataract/corrected corneal refractive index/posterior corneal surface diopter引用本文复制引用
基金项目
福州市卫生健康中青年科学研究项目资助(2021-S-wq5)
出版年
2024
NETL
NSTL
万方数据