June 2023
Volume 64, Issue 8
Open Access
ARVO Annual Meeting Abstract  |   June 2023
Six sessions of rapid serial visual presentation training improves reading of Chinese characters in patients with central vision loss
Author Affiliations & Notes
  • Anqi Lyu
    School of Optometry, The Hong Kong Polytechnic University, Hong Kong, Hong Kong
  • Andrew Ernest Silva
    School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada
  • Melanie Mungalsingh
    School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada
  • Susan J Leat
    School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada
    Centre for Eye and Vision Research Limited, Hong Kong, Hong Kong
  • Shamrozé Khan
    School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada
  • Tammy Labreche
    School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada
    Centre for Eye and Vision Research Limited, Hong Kong, Hong Kong
  • Jonathan C.H. Chan
    Department of Ophthalmology, The University of Hong Kong, Hong Kong, Hong Kong
  • Qing Li
    Department of Ophthalmology, The University of Hong Kong, Hong Kong, Hong Kong
  • George Woo
    School of Optometry, The Hong Kong Polytechnic University, Hong Kong, Hong Kong
    Centre for Eye and Vision Research Limited, Hong Kong, Hong Kong
  • Stanley Woo
    School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada
  • Larry A Abel
    School of Medicine, Deakin University, Burwood, Victoria, Australia
  • Benjamin Thompson
    School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada
    Centre for Eye and Vision Research Limited, Hong Kong, Hong Kong
  • Allen M Y Cheong
    School of Optometry, The Hong Kong Polytechnic University, Hong Kong, Hong Kong
    Centre for Eye and Vision Research Limited, Hong Kong, Hong Kong
  • Footnotes
    Commercial Relationships   Anqi Lyu None; Andrew Silva None; Melanie Mungalsingh None; Susan Leat None; Shamrozé Khan None; Tammy Labreche None; Jonathan C.H. Chan None; Qing Li None; George Woo None; Stanley Woo None; Larry Abel None; Benjamin Thompson None; Allen Cheong None
  • Footnotes
    Support   1) Velux Stiftung Foundation (Grant 1188); 2) Government of the Hong Kong Special Administrative Region & InnoHK; 3) Postgraduate research studentship, The Hong Kong Polytechnic University
Investigative Ophthalmology & Visual Science June 2023, Vol.64, 2804. doi:
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      Anqi Lyu, Andrew Ernest Silva, Melanie Mungalsingh, Susan J Leat, Shamrozé Khan, Tammy Labreche, Jonathan C.H. Chan, Qing Li, George Woo, Stanley Woo, Larry A Abel, Benjamin Thompson, Allen M Y Cheong; Six sessions of rapid serial visual presentation training improves reading of Chinese characters in patients with central vision loss. Invest. Ophthalmol. Vis. Sci. 2023;64(8):2804.

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

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Abstract

Purpose : Perceptual learning, defined as changes in sensory function through repeated practice, can improve English reading speed in patients with central vision loss. To further assess the potential of perceptual learning as a reading rehabilitation tool, we tested the hypothesis that six sessions of reading training would improve reading speed for Chinese characters in patients with central vision loss.

Methods : Fourteen patients with macular degeneration (aged 68.60 ± 11.47 years) were recruited as part of a larger, ongoing study using non-invasive brain stimulation for vision rehabilitation. Reading was assessed using rapid serial visual presentation (RSVP), where Chinese sentences were presented one character at a time at various speeds and print sizes. Critical print size (CPS) was calculated as the smallest print size eliciting the maximum reading speed (MRS). Text reading performance was assessed using the Chinese version of MNRead Acuity Charts. Training consisted of six sessions of reading RSVP sentences, 2 blocks/session, where 4 print sizes spaced around CPS were examined at 4 speeds across 4 trials. MRS and text reading speed were log-transformed and CPS was compared before, 1 day after, and 1 month after all training sessions.

Results : Within-subjects ANOVA revealed significant log MRS improvements with time (F(2, 26)=5.24, p=0.01), with faster MRS at 1-day (2.42 ± 0.24 log characters/minute, p=0.04) and 1-month post (2.43 ± 0.27, p=0.02) compared with pre-test (2.34 ± 0.29). No difference was found between the 2 post-tests (p>0.99). The changes in CPS with training were also significant (F(2, 26)=4.70, p=0.02). CPS at 1-day post (1.15 ± 0.35 logMAR) was not significantly different from pre-test (1.21 ± 0.34 logMAR, p=0.30) but significantly smaller than 1-month post (1.26 ± 0.33, p=0.02). The training effect did not transfer to text reading speed with MNRead Acuity Charts (2.04 ± 0.38 vs. 2.05 ± 0.32 vs. 2.06 ± 0.36 log characters/minute (F(2, 26)=0.08, p=0.92).

Conclusions : Six sessions of RSVP training improved Chinese character reading speed in individuals with central vision loss. The reading speed improvement lasted for a month.

This abstract was presented at the 2023 ARVO Annual Meeting, held in New Orleans, LA, April 23-27, 2023.

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