> Why does "partially-sighted people are likely to have lower quality of life than fully-sighted ones" feel wrong to you? Usain Bolt obviously has two pretty a

> Why does "partially-sighted people are likely to have lower quality of life than fully-sighted ones" feel wrong to you? Usain Bolt obviously has two pretty amazing legs, and my legs by contrast must look 'less able'. But I'd be offended if you assumed that Usain Bolt has a better quality of life simply because he has 'more able' legs. So with this gene selection we end up in selecting only those with the legs of Usain Bolt. I feel the same about sight. I'm fairly short-sighted so wear glasses, and my glasses are kind of part of my personality. Even if somebody wanted to pay for the laser surgery, and it was a guaranteed success, I can't say that I'd definitely do it. So in the case of your questions - if somebody asked me to improve their sight, and it was in my power to do so, then I would do it. But I don't think it would guarantee them a better quality of life.