June 2013
Volume 54, Issue 15
Free
ARVO Annual Meeting Abstract  |   June 2013
A New Computerized Autoacuity Test for Assessment of the Visual Acuity of Pre-school Children
Author Affiliations & Notes
  • Mingxing Wu
    Cataract, Zhongshan Ophthalmic Center, Guangzhou, China
  • Yingyan Qin
    Cataract, Zhongshan Ophthalmic Center, Guangzhou, China
  • Liangping Liu
    Cataract, Zhongshan Ophthalmic Center, Guangzhou, China
  • Shaobi Ye
    Cataract, Zhongshan Ophthalmic Center, Guangzhou, China
  • Min Fu
    Shenzhen Children and Women Hospital, Shenzhen, China
  • Zhenzhen Liu
    Cataract, Zhongshan Ophthalmic Center, Guangzhou, China
  • Young Tsau
    Dimetek Digital Medical Technologies, Limited,, Shenzhen, China
  • Footnotes
    Commercial Relationships Mingxing Wu, None; Yingyan Qin, None; Liangping Liu, None; Shaobi Ye, None; Min Fu, None; Zhenzhen Liu, None; Young Tsau, None
  • Footnotes
    Support None
Investigative Ophthalmology & Visual Science June 2013, Vol.54, 5723. doi:https://doi.org/
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      Mingxing Wu, Yingyan Qin, Liangping Liu, Shaobi Ye, Min Fu, Zhenzhen Liu, Young Tsau; A New Computerized Autoacuity Test for Assessment of the Visual Acuity of Pre-school Children. Invest. Ophthalmol. Vis. Sci. 2013;54(15):5723. doi: https://doi.org/.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose: This study aims to propose and verify a novel protocol called Autoacuity Test for fast vision screening among pre-school children.

Methods: 991 children (3 to 6 years) from 7 kindergartens were tested with both the ETDRS Chart and Autoacuity Test. Of these children, 234 were randomly selected to re-examine. All subjects were examined to exclude other ophthalmic problems. The Autoacuity Test was conducted using a computer generated randomly located checkerboard testing objects of variable spatial frequencies against an identically illuminated background shown on a display, where visual acuity was defined as logarithm of the minimal view angle of the square size that the subject could detect the object.

Results: The mean ages of the subjects is 4.6 ± 1.8 years, the testability for the Autoacuity Test and ETDRS chart is 93.6% and 98.5%, respectively. The mean visual acuities were 0.27 ±0.22 for the Autoacuity Test and 0.23 ± 0.22 for the ETDRS test, respectively. The limit of agreement between the Autoacuity Test and the ETDRS Chart was (-0.30, 0.22). And about 90% of visual acuity biases between two methods were within 0.20 log units. Bland-Altman plots suggested that 95% of visual acuities measured by the test and retest would differ within 0.25 log units(for Autoacuity Test). The intraclass correlation coefficient and its 95% CI for the test-retest was 0.495(0.392, 0.586) for the Autoacuity.

Conclusions: The Autoacuity Test has fair test-retest repeatability and good concordance with ETDRS chart. The Autoacuity test is a good candidate method for fast vision screening among children.

Keywords: 754 visual acuity • 709 screening for ambylopia and strabismus • 757 visual development: infancy and childhood  
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