Or, if you're like me and you want to do a lot of heavy reading, use the iPad because the low contrast on a Kindle is extremely fatiguing. 😉
Seriously, though "screen glare will cause eye strain" is often taken as an article of faith, there's not a lot of good scientific evidence for it. "Eye strain" can be caused by concentrating on any close work for long periods of time. Looking up and focusing on something distant periodically is very helpful. Older CRT screens that flicker also can be aggravting. I'm not denying that some people find reading backlit screens uncomfortable. However, it's not dangerous. And, then, there are other people who find the higher contrast a backlit screen affords to be much less wearying over long periods of time.