Another stoopid letter in the SCMP:

E-readers might result in eye strain

Some correspondents have commented on the benefits of e-reading. I agree with those who argue that it can revive people's interest in literature.

However, I think there are some disadvantages to intensive reading of books and other material on these devices.

You can spend too long reading books on these screens and suffer eye strain.

Also, people on low incomes cannot afford the e-reader, and find it cheaper to purchase a novel.

Andy Lai Chin-pang , Tai Wai

He must surely mean a Kindle  or Nook e-reader, the whole point being that e-ink doesn’t cause eye strain.  Of course, an iPad or Kindle Fire is a different matter.