I also have bad eyes, being a 50-year-old diabetic with serious astigmatism, and I really don't have any problem reading on my Kindle 1. I would like to see font size changes carry across to home page, but other than that I get along fine with it.
Also adding a touchscreen would reduce the clarity and readability of the screen, I'm very much against that. And no lighting around the screen edges either. If I wanted a buttonless-glow-in-your-face-iPad for reading I would have bought an iPad.
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