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A comparison of blink rate: Reading from VDT vs. hard copy

1 May 1988


Today's business world has been revolutionized by the advent of video display terminals (VDTs). While more and more people are now working with VDTs, many are experiencing symptoms and will visit optometrists. One of the common complaints is dry feeling eyes. Studies have shown that the formation and stability of the pre-corneal tear film is dependent on the blinking action of the eyelids and that lack of blinking will result in a defective tear film and subsequently a dry feeling of the eyes. In this study, blink rates were compared to determine if part of the discomfort experienced by VDT users was induced by reduced blink rates, and thus dry feeling eyes.


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