Painful sudden blurr tired drowsy eyes.

Hello Dr so recently from 2-3weeks I facing some eye problems, when it first started it was mild tiredness heaviness inside the eye, can't focus while studying but took a bit break then all fine, I study 10-12hours each day while looking at the laptop screen and notebooks each mint, and from these days my eyes are making me drowsy, and in this week it's uncontrollable, it's making me drowsy, nausea, headaches, eye pain, eye tiredness,mild blurry vision. even I took break the 10 mints break only last 20mints of study time. Yesterday while I was studying I couldn't focus at all, not matter how much I lie down, the eye pain not going and while looking at the screen while the teacher moving my eyes are getting sudden blurr vision only when I'm looking at the screen teacher moving and my eyes keep getting blurry and rolling like my getting dizzy. Dr plz tell me is it serious condition what happened and what should i do? Plz help me! I also gave a pic of my eyes current condition.