A clinical evaluation of the BioPen.
A clinical evaluation of the BioPen.
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BioPen 的临床评估。
DOI：
10.1016/0002-9394(89)90255-9
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发表时间：
1989
影响因子：
4.2
通讯作者：
Wynbrandt,L
中科院分区：
文献类型：
--
作者：
Kristensen,RM;Lee,DA;Christensen,RE;Wynbrandt,L
我们对Oculab BioPen进行了临床试验，Oculab BioPen是一种便携式手持压平仪器，旨在测量眼轴长度。我们将从BioPen获得的测量结果与来自CoperVision的超声波数字B系统IV获得的测量结果进行比较。在体外，每台仪器在一个25.8 mm的塑料试块上进行10次测量，以评估准确性和重复性。通过对58名患者的每只眼睛进行五次连续读数，评估了BioPen的活体重复性。角膜曲率测量也被记录下来，以确定无论角膜曲率如何，BioPen是否提供一致的读数。我们发现，在体外和体内，BioPen和超声波Digital B一样准确和可重复性。角膜曲率对BioPen的体内重复性没有影响。
We conducted a clinical trial on the Oculab BioPen, a portable, handheld applanation instrument designed to measure ocular axial lengths. We compared the measurements obtained from the BioPen with those obtained from the Ultrascan Digital B System IV from CooperVision. Accuracy and reproducibility were assessed in vitro by performing ten measurements with each instrument on a precali-brated 25.8-mm plastic test block. The in vivo reproducibility of the BioPen was evaluated by performing five serial readings on each eye of 58 patients. Keratometry measurements were also recorded to determine whether the BioPen provided consistent readings regardless of corneal curvature. We found the BioPen to be as accurate and reproducible as the Ultrascan Digital B in vitro and in vivo. Corneal curvature had no effect on the in vivo reproducibility of the BioPen.