It seems from the history that you are having dryness of eyes induced by use of computers called as Computer vision syndrome
The treatment and advice is as follows
Continue using refresh tears as suggested by ophthalmologist as frequently as possible.
Blink your eyes regularly while using computer.
Take rest at frequent intervals like once in 30 minutes for atleast 2 minutes by closing your eyes.
Avoid using air conditioners or fan as far as possible.
Seating adjustment in such a way that your eyes level should be above the monitor of the computer.