[目的]对Pentacam系统获得的近视眼的前节各部位数据进行分析.[方法]应用Pentacam系统对436只近视眼球进行检测并获取数据,计算各部位数据的变异系数（Coefficient of variation,CV）.按等效球镜数据,将人群分为超高近视组、高度近视组...[目的]对Pentacam系统获得的近视眼的前节各部位数据进行分析.[方法]应用Pentacam系统对436只近视眼球进行检测并获取数据,计算各部位数据的变异系数（Coefficient of variation,CV）.按等效球镜数据,将人群分为超高近视组、高度近视组、中度近视组和低度近视组,数据采用单因素方差分析法（One-way ANOVA）进行分析.按性别分组及眼别分组的数据,采用两独立样本非参数检验法分析（秩和检验）.[结果]眼前部组织和近轴部位数据变化小,前节后部和周边部的数据变化大.超高度近视组的房角,较其他各组的窄,差异有统计学意义（ P ＜0.05）.角膜最薄处厚度、角膜容积和瞳孔直径方面,男性数据与女性数据差异无统计学意义（ P ＞0.05）.左右眼各项数据差异无统计学意义（ P ＞0.05）.[结论]Pentacam系统进行眼部检查,速度快,操作简单,一次检查获取数据功能强,数据结果符合人体解剖特点和生理变化,具有较好的临床应用价值.展开更多
Background: Corneal thickness measurements are important in refractive surgery , for interpretation of IOP and in corneal diseases. The purpose of this study w as to generate specific standard values for the Pentacam ...Background: Corneal thickness measurements are important in refractive surgery , for interpretation of IOP and in corneal diseases. The purpose of this study w as to generate specific standard values for the Pentacam system and to investiga te the influence of body size, body mass index, body weight, gender and refracti on on central and peripheral corneal thickness for a more detailed characterizat ion of the corneal anatomy. Materials and Methods: The Pentacam system is based on a 180°rotating computer-aided Scheimpflug camera, which generates reconstru ctions of the anterior segment from 12 to 50 single captures. The central corneal thickness was calculated from 25 single captures in both eyes of 182 normal Caucasian subj ects (age: 18-83 years). The peripheral corneal thickness was measured within 3 mm distances at 0°, 90°, 180°and 270. All subjects underwent an ophthalmolog ical examination. Correlations between corneal thickness and body size, body mas s index, body weight, gender and refraction were analyzed statistically by non- parametric tests. Results: The mean central corneal thickness of all 364 eyes wa s 534 ±36 μm. Divided into sides it was the same, 534 ±36 μm, in the right a nd in the left eyes. The mean central corneal thickness for female subjects was 533 ±40 μm, for males it was 534 ±35 μm. Statistically there was no proof of any dependence of the central corneal thickness values on the sides, gender, ag e, height, body mass index (BMI) or refraction. However, there was a positive si gnificant correlation between central corneal thickness and body weight. The per ipheral corneal thickness values were lowest in the temporal and inferior areas and greatest in the superior and in the nasal areas. In the superior and in the nasal areas there was a statistically significant negative correlation between a ge and peripheral corneal thickness. Conclusions: The corneal thickness can be m easured touchless with the Pentacam system. The central corneal thickness seems to be correlated with the body weight. Anatomical features lead to lower periphe ral corneal thickness values in the temporal and inferior areas than in the nasa l and superior areas. In the nasal and in the superior areas the corneal thickne ss seems to decrease with age. Further trials are necessary to confirm these fin dings and to evaluate the precision, reproducibilitiy and independence of invest igators of the corneal pachymetry with the Pentacam system.展开更多
文摘[目的]对Pentacam系统获得的近视眼的前节各部位数据进行分析.[方法]应用Pentacam系统对436只近视眼球进行检测并获取数据,计算各部位数据的变异系数（Coefficient of variation,CV）.按等效球镜数据,将人群分为超高近视组、高度近视组、中度近视组和低度近视组,数据采用单因素方差分析法（One-way ANOVA）进行分析.按性别分组及眼别分组的数据,采用两独立样本非参数检验法分析（秩和检验）.[结果]眼前部组织和近轴部位数据变化小,前节后部和周边部的数据变化大.超高度近视组的房角,较其他各组的窄,差异有统计学意义（ P ＜0.05）.角膜最薄处厚度、角膜容积和瞳孔直径方面,男性数据与女性数据差异无统计学意义（ P ＞0.05）.左右眼各项数据差异无统计学意义（ P ＞0.05）.[结论]Pentacam系统进行眼部检查,速度快,操作简单,一次检查获取数据功能强,数据结果符合人体解剖特点和生理变化,具有较好的临床应用价值.
文摘Background: Corneal thickness measurements are important in refractive surgery , for interpretation of IOP and in corneal diseases. The purpose of this study w as to generate specific standard values for the Pentacam system and to investiga te the influence of body size, body mass index, body weight, gender and refracti on on central and peripheral corneal thickness for a more detailed characterizat ion of the corneal anatomy. Materials and Methods: The Pentacam system is based on a 180°rotating computer-aided Scheimpflug camera, which generates reconstru ctions of the anterior segment from 12 to 50 single captures. The central corneal thickness was calculated from 25 single captures in both eyes of 182 normal Caucasian subj ects (age: 18-83 years). The peripheral corneal thickness was measured within 3 mm distances at 0°, 90°, 180°and 270. All subjects underwent an ophthalmolog ical examination. Correlations between corneal thickness and body size, body mas s index, body weight, gender and refraction were analyzed statistically by non- parametric tests. Results: The mean central corneal thickness of all 364 eyes wa s 534 ±36 μm. Divided into sides it was the same, 534 ±36 μm, in the right a nd in the left eyes. The mean central corneal thickness for female subjects was 533 ±40 μm, for males it was 534 ±35 μm. Statistically there was no proof of any dependence of the central corneal thickness values on the sides, gender, ag e, height, body mass index (BMI) or refraction. However, there was a positive si gnificant correlation between central corneal thickness and body weight. The per ipheral corneal thickness values were lowest in the temporal and inferior areas and greatest in the superior and in the nasal areas. In the superior and in the nasal areas there was a statistically significant negative correlation between a ge and peripheral corneal thickness. Conclusions: The corneal thickness can be m easured touchless with the Pentacam system. The central corneal thickness seems to be correlated with the body weight. Anatomical features lead to lower periphe ral corneal thickness values in the temporal and inferior areas than in the nasa l and superior areas. In the nasal and in the superior areas the corneal thickne ss seems to decrease with age. Further trials are necessary to confirm these fin dings and to evaluate the precision, reproducibilitiy and independence of invest igators of the corneal pachymetry with the Pentacam system.
