Hi, as a teenager i looked sometimes directly at the sun for few minutes, nowadays for being in the pc for 5minutes my eyes get dry, related?

Probably Not: Your current symptoms are not likely due to your past actions. More likely your work in front of the PC is taking it's toll. I recommend periodic breaks from looking at the screen. Artificial tears and eye wetting drops can be helpful as well. Make sure you have good lighting in the room and if symptoms continue, seek evaluation with an ophthomologist