I'm not sure if its cause i play off ps4 or im at a distance but I'm thankful i never had this problem but i do agree vanguard a bit bright for my taste it makes it hard sometimes to see aoe and line attacks. Maybe give ur eyes a break thats about the most I can say outdide blue monitor but we've seen how disrespectful that one guy was. Take a break rub ur eyes play in well lit areas turn brightness down if not it may be ur eyes. No one in my fc mentioned this my fc is 100+ members. So yeah best of luck everyone remember no amount of gaming is worth at risk of you own health and well being.