Consistency analysis of differences between VX120 multi-diagnostic unit and TopconKR800 automatic optometer
Journal Title: Eye Science (Yanke Xuebao) - Year 2021, Vol 36, Issue 10
Abstract
[Objective:] The aim of this study was to compare the consistency of objective optometry results between VX120 multi-diagnostic unit and TopconKR800 automatic optometer. [Methods:] A total of 24 patients (24 right eyes) admitted to our hospital from November 2019 to December 2019 for corneal refractive surgery were collected. Optometry was performed on 24 patients with TopconKR800 automatic optometer and VX120 multi-diagnostic unit, and got the results following: spherical mirror photometry (S), cylindrical lens luminosity (C), mean spherical equivalent (M), horizontal and vertical cylindrical lens luminosity (J0) and 45° cylindrical lens luminosity (J45). Compared T-test analysis was used to compare the parameters of the two devices, and the Bland-Altman 95% limits of agreement were performed. [Results:] The S measured by the VX120 multi-diagnostic unit with bright mode was (−3.90±3.06) D; M was (−4.41±3.24) D; J0 was (0.34±0.58) D; J45 was (−0.04±0.26) D. The S measured by TopconKR800 automatic optometer was (−3.77±2.88) D; M was (−4.15±3.07) D; J0 was (0.25±0.47) D; J45 was (−0.01±0.18) D. There was no statistically significant difference in S, M, and J45 measured by VX120 multi-diagnostic unit and TopconKR800 automatic optometer in bright mode, while there was statistically significant difference in J0 between VX120 multi-diagnostic unit and TopconKR800 automatic optometer (t=−2.24, P=0.04). Bland-Altman 95% consistency analysis showed that the data points of the two instruments were mostly distributed within the 95% confidence interval, indicating that the parameters measured by these two devices were in accord with each other. [Conclusion:] The objective optometry results of VX120 multi-diagnostic unit and TopconKR800 automatic optometer were consistent and can be substituted for each other in the refraction examination.
Authors and Affiliations
Huini LIN, Qiuxia LIU, Lixia SUN
Keywords
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- EP ID EP763576
- DOI 10.3978/j.issn.1000-4432.2021.08.08
- Views 13
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