I am an IT professional so using pc and mobile is usually common for me but since 1 week I am feeling headache when I use pc or mobile phone it usually happens when I use it from close distance so I tried avoiding using pc from close distance but even when I use pc on table and chair I feel little strain on my eyes and causes headache it had happens before once. Dr suggested using lubricating eye drop and it worked but now it's not working. Also I went of a hill station trip for 4 days and got wet in rain during the trip and getting headache since then and my eyes are continuously aching not oo much but noticeable I avoid using mobile in dark as much as I can.