Quote:
Originally Posted by tomsem
I would just note that the former paper just references other ‘studies’ and summarizes issues, and the latter paper is over 5 years old and references some pretty ancient devices (the original Paperwhite, probably 2nd generation Fire HD, iPad 1, Sony reader).
Still the first paper is full of some delightful techno-babble:
Reference [32] turns out to be a paper entitled “Blinking and Tear Break-Up During Four Visual Tasks”. Glad someone is studying this, and not me.
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The three reading devices used in this study: the paper book, the Kindle Paperwhite and the Kindle Fire HD (from left to right).
The experiment consisted of prolonged reading (>1 hour) on each device while eye data were recorded. Subjective and objective visual fatigue measures were collected at the beginning and at the end of each reading session.
Eye data were recorded with a 30 Hz infrared video-based eye tracker (SMI Eye Tracking Glasses - ETG).
experimental evidence indicated that reading on the LCD leads to a larger decrease in the number of blinks, with respect to the other supports. This result is in line with a large number of studies on CVS (for a review see [32]), where the use of backlit displays is usually associated with a decreased frequency of blinking and an increased rate of tear evaporation, each of which contributes to dry eyes. In fact, prolonged display exposure contributes to incomplete blinking provoking tear film instability [44], which is one of the main factors for visual fatigue on VDT [45].
our results showed that participants felt visually fatigued only when reading on the LCD. Such a finding might be attributable to the longer reading sessions employed in our study (on average 73 min, SD 10 min), with respect to previous studies [11], [18].
Although the Kindle Fire HD adopts a last generation LCD with IPS (in-plane switching) technology, advanced polarizing filter, and anti-glare technology, the issues related to backlight technology are still present. In contrast to LCD-displays, which have been associated with impaired reading performance [14] and higher visual fatigue [17], results on E-ink displays are encouraging.
Since visual discomfort and related symptoms occurring in VDT workers have been recognized as a growing health problem [32],
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