Hello Mobile use can cause dryness 1. Blink a lot 2. Cold compresses 3. Use lubricating eyedrop like flogel thrice daily

Hello, sir using mobiles could cause this, but it will on both the eyes, you will be having refractive errors, and headache. But if you have one red eye which itches, watery it could be due to conjunctivitis all you need Is eye drops (ciplox - d eye drops 3 times a day (if no other complications), will cure most of simple conjunctivitis and visit a ophthalmologist.