As much as you can follow the below mentioned ways 1) Always wear your glasses (while working on your gadgets) 2) Take small breaks in between like 20 mins once while you see the screen 3) Drink 4-5 litres of water per day 4) Try to blink your eyes more 5) Use reading mode in gadgets or minimal brightness 6) Don't use the gadgets in dark room, work in well lighted room 7) Do push up tests and ORTHOPTIC exercises (you search this in google)