Visual acuities as measured with an automatic intelligent visual acuity chart projector and standard logarithmic visual acuity chart: a prospective comparative study.

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Tác giả: Youxin Chen, Weijuan Kang, Xinyu Liu, Mingyue Luo, Dingding Zhang

Ngôn ngữ: eng

Ký hiệu phân loại:

Thông tin xuất bản: Switzerland : Frontiers in medicine , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 687425

PURPOSE: This study aimed to test the repeatability of visual acuity (VA) measurement using an novel intelligent projector visual acuity (IP) chart (LSJ-IVAC-6000A, Hunan Liangshi Jia Biotechnology Co., Ltd.) and the consistency of VA measurement between the IP chart and the 5 m standard logarithmic visual acuity (SL) chart (GB11533-2011). METHODS: In this prospective comparative study, 53 subjects were included to test the internal repeatability of the IP chart. Both eyes of the subjects were tested three times, with a minimum interval of 10 min. The intraclass correlation coefficient (ICC) was used to evaluate the repeatability. One hundred subjects were included to test the consistency between two charts. Both eyes of the subjects were tested with two charts in random order with an interval of 10 min for each test. ICC and the Bland-Altman statistical analyses were used to analyze the consistency of the two charts. VA values were expressed by the logMAR recording method. The time consumption for each test was recorded in seconds. RESULTS: In the repeatability analysis, the ICC values of the right and left eye were 0.968 (95% CI, 0.950-0.981, CONCLUSION: The IP chart demonstrated good repeatability and overall consistency with the SL chart.
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