Pattern of reading eye movements during monovision contact lens wear in presbyopes

Zeri, Fabrizio, Naroo, Shehzad A., Zoccolotti, Pierluigi and De Luca, Maria (2018). Pattern of reading eye movements during monovision contact lens wear in presbyopes. Scientific Reports, 8 ,

Abstract

Monovision can be used as a method to correct presbyopia with contact lenses (CL) but its effect on reading behavior is still poorly understood. In this study eye movements (EM) were recorded in fifteen presbyopic participants, naïve to monovision, whilst they read arrays of words, non-words, and text passages to assess whether monovision affected their reading. Three conditions were compared, using daily disposable CLs: baseline (near correction in both eyes), conventional monovision (distance correction in the dominant eye, near correction in the non-dominant eye), and crossed monovision (the reversal of conventional monovision). Behavioral measures (reading speed and accuracy) and EM parameters (single fixation duration, number of fixations, dwell time per item, percentage of regressions, and percentage of skipped items) were analyzed. When reading passages, no differences in behavioral and EM measures were seen in any comparison of the three conditions. The number of fixations and dwell time significantly increased for both monovision and crossed monovision with respect to baseline only with word and non-word arrays. It appears that monovision did not appreciably alter visual processing when reading meaningful texts but some limited stress of the EM pattern was observed only with arrays of unrelated or meaningless items under monovision, which require the reader to have more in-depth controlled visual processing.

Publication DOI: https://doi.org/10.1038/s41598-018-33934-6
Divisions: Life & Health Sciences
Life & Health Sciences > Optometry
Life & Health Sciences > Ophthalmic Research Group
Additional Information: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
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Related URLs: http://www.natu ... 598-018-33934-6 (Publisher URL)
Published Date: 2018-10-22
Authors: Zeri, Fabrizio ( 0000-0003-0529-555X)
Naroo, Shehzad A. ( 0000-0002-6373-7187)
Zoccolotti, Pierluigi
De Luca, Maria

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