Changes in blink rate and ocular symptoms during different reading tasks

Clinical Optometry
Ali A Abusharha

Abstract

Reading from tablets is fundamental to modern culture. This study measured differences in the blink rate and symptoms of ocular discomfort in healthy participants during reading from a tablet and a paper book. Forty healthy, normal males subjects were recruited for this study. Subjects were video recorded during reading a text presented on an electronic device (9.7 inch tablet) and a hard copy format, for 15 min. Ocular discomfort experienced during reading was scored using a visual analog scale. Each participant was examined performing one of the two tasks (randomized) on one visit and the other on a separate visit (crossover design). All subjects were evaluated before the reading tasks and every 5 min during 15 min of reading. The mean ± standard deviation blink rate was 19.74 ± 9.12/min at baseline. The blink rate decreased significantly under both reading conditions (to 11.35 ± 10.20 and 14.93 ± 10.90/min when reading from a book and a tablet, respectively). There was no significant difference in the blink rate over 15 min during either type of reading. The mean discomfort symptom scores were 148 for the book and 134 for the tablet; both were significantly higher than baseline. A gradual increase in symptoms was found every...Continue Reading

Citations

Dec 19, 2020·Clinical Ophthalmology·María Del Rosario Sánchez-ValerioVerónica Vallejo-Ruiz
Oct 30, 2020·Clinical Ophthalmology·William Rojas-CarabaliAlejandra de-la-Torre
Apr 9, 2021·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Etty BittonWalter Wittich
Apr 27, 2021·Eye & Contact Lens·Travis MitchellStephen C Pflugfelder

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