to Ohio State University researchers, those who squint their eyes,
blink their eyelids less than normal; from around 15 blinks per minute
to 7.5. Squinting is common during computer use and reading as it
allows things to become visually clearer and reduce any glare. However,
squinting results in less blinking that can cause the eyes to dry,
resulting in aching, burning, stinging eye symptoms. A
good idea is to rest your eyes often and to consider increasing your
monitor size, or, reducing your monitor resolution settings which in
turn increases the size of fonts and images on your computer screen
making you less likely to squint and thus, less likely to suffer from
aching, burning, stinging eyes.
Source: Reuters. December 2005.