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Reasons for Digital Eye Strain: Back Lit Screens

Hippus is the normal involuntary small rhythmic pulses (dilation/constriction) of the pupil. The frequency and size of hippus movements are influenced by light.   There is a school of thought that backlit screens cause more fatigue and strain because they induce more intense hippus movements. This would be why many people enjoy reading more on paper or e-readers vs. tablets/laptops/phones.   There is not much research on this topic to make recommendations.

Last modified onWednesday, 22 April 2020 19:59
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