PDF(Pubmed)
Abstract：
OBJECTIVE: To simplify the fitting process, this study was designed to predict the initial power of contact lenses using the regression model based on manual Javal keratometry data and refractive errors.
METHODS: In this retrospective study, 121 eyes of 69 patients with keratoconus (KCN) were fitted with a specific trial set of rigid gas permeable contact lenses based on the standard criterion of \"three-point touch\" over a 7-year period. Power of the cornea was measured using Javal keratometer. Refractive errors and over refraction of patients were diagnosed using Topcon autorefractometer (RM-A2000) and confirmed by Heine beta 2000 retinoscope.
RESULTS: The results of multiple linear regression showed the following equation: power of contact lens = -14.368 (constant of the final multiple regression model), +0.475 (spherical refraction), and +0.275 (flatter corneal power).
CONCLUSIONS: The results of this study revealed that lens power has a significant relationship with the power of the flat corneal meridian and spherical refractive error in KCN patients. The obtained regression model can be used to shorten patients\' chair time and optometric examination for predicting the power of contact lens.
METHODS: In this retrospective study, 121 eyes of 69 patients with keratoconus (KCN) were fitted with a specific trial set of rigid gas permeable contact lenses based on the standard criterion of \"three-point touch\" over a 7-year period. Power of the cornea was measured using Javal keratometer. Refractive errors and over refraction of patients were diagnosed using Topcon autorefractometer (RM-A2000) and confirmed by Heine beta 2000 retinoscope.
RESULTS: The results of multiple linear regression showed the following equation: power of contact lens = -14.368 (constant of the final multiple regression model), +0.475 (spherical refraction), and +0.275 (flatter corneal power).
CONCLUSIONS: The results of this study revealed that lens power has a significant relationship with the power of the flat corneal meridian and spherical refractive error in KCN patients. The obtained regression model can be used to shorten patients\' chair time and optometric examination for predicting the power of contact lens.
摘要：
目的：为了简化装配过程，本研究旨在使用基于人工Javal角膜曲率测量数据和屈光不正的回归模型预测隐形眼镜的初始屈光力.
方法：在这项回顾性研究中，69例圆锥角膜（KCN）患者的121只眼在7年的时间内，根据“三点接触”的标准标准，安装了一组特定的硬质透气性隐形眼镜。使用Javal角膜曲率计测量角膜的功率。使用Topcon自动折射仪（RM-A2000）诊断患者的屈光不正和过屈光，并由Heinebeta2000视网膜镜确认。
结果：多元线性回归的结果显示以下等式：隐形眼镜的度数=-14.368（最终的多元回归模型的常数），+0.475（球面折射），和+0.275（更平坦的角膜功率）。
结论：这项研究的结果表明，KCN患者的晶状体屈光力与平坦角膜子午线屈光力和球面屈光不正有显着关系。所得回归模型可用于缩短患者的坐位时间和验光检查，以预测隐形眼镜的度数。
方法：在这项回顾性研究中，69例圆锥角膜（KCN）患者的121只眼在7年的时间内，根据“三点接触”的标准标准，安装了一组特定的硬质透气性隐形眼镜。使用Javal角膜曲率计测量角膜的功率。使用Topcon自动折射仪（RM-A2000）诊断患者的屈光不正和过屈光，并由Heinebeta2000视网膜镜确认。
结果：多元线性回归的结果显示以下等式：隐形眼镜的度数=-14.368（最终的多元回归模型的常数），+0.475（球面折射），和+0.275（更平坦的角膜功率）。
结论：这项研究的结果表明，KCN患者的晶状体屈光力与平坦角膜子午线屈光力和球面屈光不正有显着关系。所得回归模型可用于缩短患者的坐位时间和验光检查，以预测隐形眼镜的度数。
