DD is in yr 8 and in recent months it seems she gets increasingly more homework each night that needs doing on the computer rather than in books. The school have all sorts of snazzy systems where eg you log on to the maths section and do Qs 1-10, and an eportal where you can upload your homework to your teacher instead of printing and handing it in
It seems to be expected now that most homework will be done on a computer and DD has recently complained of headaches and eye-ache which I'm convinced is connected. I would say she spends between 1 and 2.5 hours each evening on homework, and 80% of this is on the computer (the assumption that every household even has a computer is another issue entirely!)
I sit in front of a screen all day and have done for most of my working life, luckily it has not yet had a noticable effect on my vision, but DD wears glasses already for quite severe long-sightedness and I worry that exposed computer use will make this much worse. She is allowed some (supervised) free time at home on the internet but I try and restrict this as much as possible (I'm certainly not a technophobe but HATE kids plugged into things for hours).
I've mentioned it to her form teacher and the reply was along the lines of "that's the way the modern world is heading" 
We are at the optician's tonight to get her eyes checked and will mention it, but I just wondered what others thought...?