Hello doctor i recently visited a ophthalmologist because i was having some eye flickering. And also i have pain in or maybe behind my eyes. my phone usage is a lot. almost all day and night! and the pain to is only for few minutes and not everytime. I had a slight number when i was 16 maybe and that was only 0.25 in my left eye. it has remained constant till now. i stopped using specks long back. now my doctor suspects i'm having glaucoma! im only 20 years old. is it possible for me to have glaucoma?