I feel like I don't blink enough and is why my eyes hurt. What can I do? I see sparkles of light throughout day but eye dr never finds anything. Worrie

Reduce computer time. You may be staring inadvertently on the screen which then reduce the blink reflex. This then dries the eye out in reduces lubrication of the eye with the natural oils in the tear film. So the best thing you can do is use non-preservative lubricating eye drops every few hours, also use warm compresses each morning for about five minutes.And if more dryness is present, you may need to use oint/nite.