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Accuracy and Precision of Fitting Measurements with the Zeiss I. Terminal 2

出版	Northeastern State University, 2016
URL	http://books.google.com.hk/books?id=uBV9tAEACAAJ&hl=&source=gbs_api

註釋Purpose. New measurement technology captures specific frame and lens parameters as well as eye rotation and visual behavior of the patient. Manual measurement tools require significant clinical skill for accuracy and repeatability. The purpose of this study is to compare the accuracy and precision of automated frame and lens measurements taken with the i. Terminal® 2 to manual measurement techniques. Methods. We selected and adjusted an appropriate frame for 20 subjects. We obtained measurements for monocular and binocular interpupillary distance, fitting height, vertex distance, wrap angle, and pantoscopic tilt angle using the i. Terminal® 2 and manual tools. We statistically analyzed the repeatability of the automated and manual measurements and compared the accuracy of one technique relative to the other. Results. Manual techniques demonstrated better repeatability for monocular PD, fitting height, and wrap angle measurements. The i. Terminal® 2 displayed better repeatability for binocular PD, pantoscopic tilt, and vertex distance. Monocular and binocular PD measurements for both manual and automated techniques demonstrated acceptable clinical accuracy compared to current clinical standards. Comparing manual and i. Terminal® 2 measurements, right-eye monocular and binocular PD measurements were at the upper limit of clinical equivalence based on current clinical standards. Fitting height measurements were not clinically comparable. Conclusion. Our results suggest that current ophthalmic measurement techniques using manual tools and an experienced clinician still have better overall repeatability and accuracy for clinically critical measurements compared to fitting measurements acquired using new measurement technology such as the i. Terminal® 2.