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Related Experiment Video

Updated: Jul 16, 2026

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
05:14

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

Chinese Reading Performance with Toric Versus Spherical Equivalent Soft Contact Lenses: A Participant-Masked

Chin-Te Huang1,2,3, Jou-Wen Lin3, Wan-Yun Connie Tsung4

  • 1Department of Ophthalmology, Chung Shan Medical University Hospital, Taichung, Taiwan, ROC.

Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)
|July 14, 2026
PubMed
Summary

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Toric contact lenses significantly improved intermediate vision and Chinese reading speed in young adults with astigmatism compared to spherical equivalent lenses. This suggests toric lenses offer functional benefits for demanding mid-range reading tasks.

Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Background:

  • Astigmatism is a common refractive error affecting visual quality.
  • Correction of astigmatism is crucial for optimal visual performance.
  • Previous studies have shown benefits of astigmatic correction, but real-world reading performance data is limited.

Purpose of the Study:

  • To compare the impact of toric versus spherical equivalent soft contact lenses (SCLs) on visual acuity and eye-movement-based reading performance.
  • To evaluate these effects in young adults with low-to-moderate astigmatism using Chinese reading passages.
  • To assess the functional benefits of full astigmatic correction in visually demanding tasks.

Main Methods:

  • A randomized, two-period crossover study involving 28 young adults (18-35 years) with low-to-moderate astigmatism.
Keywords:
Astigmatism correctionChinese text readingEye trackingReading efficiencyToric contact lensesVisual acuity

Related Experiment Videos

Last Updated: Jul 16, 2026

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
05:14

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

  • Participants wore toric and spherical equivalent SCLs for one week each.
  • Binocular visual acuity and reading performance (reading speed, fixation metrics, saccades, regressions) were measured using standardized Chinese passages and the EyeLink 1000 Plus.

    • Main Results:

    • Toric SCLs significantly improved intermediate visual acuity at 66 cm compared to spherical equivalent lenses.
    • Reading speed for Chinese passages was significantly faster with toric lenses (345.37 vs. 322.49 cpm).
    • Toric correction led to more efficient eye movements, including fewer fixations per word, fewer total fixations, fewer saccades, and fewer regressions.

    Conclusions:

    • Toric SCLs enhance intermediate visual acuity and Chinese reading performance in young adults with low-to-moderate astigmatism.
    • These findings support the functional advantages of full astigmatic correction for mid-range reading tasks.
    • Toric correction offers a significant benefit for visually demanding tasks requiring clear vision at intermediate distances.