Does OLED display on iPhone X ruin vision or migrain

Hi all I m using iPhone X since 1 week , and would like to ask some questions regarding the OLED Display , is it dangerous to use continuously for more than 30 min continuaosly watching or typing as already have sole eye related issue does this display worsen the effect on eyes or does it give migrain as I have read on net that some ppl are complaining of migrain ??? Till now I was using only Apple iPhones and have never come across such problem as my last device was iPhone 7+ now as it was shattered I had to switch to X , can anyone here guide me is it safe really to continue using Super Retina oled display which doesn’t heart or ruin eyes. Thanks in advance