Rights of the disabled to exist and healing the illness in society

Take blindness. I would guess this could be reasonably easy to do
reliable embryonic screening. Medical technology allows the potential
for this human type to be made extinct. Most parents would not want
their child to be born blind. Should this be allowed?

In the UK the bionic eye is being trialled. This technology can offer
the blind a basic level of sight and with time the resolution of the
electronics will get higher. Should this treatment be forced upon a
blind person? Should this technology be allowed to be used?

Given the new technology to restore a basic level of visual capability
could it be possible to ban genetic screening for disabilities then
allow the individual to chose who they want to be when they reach
maturity? Or should they be counselled against this change like a person
with Sexual Identity Disorder is counselled out of their desire to be
heteronormal?

The reason is because those born blind have one of the most important
jobs: they have to live to maintain the diversity of the human race and
heal the illness in society which values homogeneous humans instead of
our beautiful diversity.

The problem is only a cunt would think like this. For many living with
blindness when sight is an option would be a terrible curse. After all,
a guide dog is also a technology which reduces the disability of the
blind. Why not just remove the problem of blindness entirely using
genetic and bioelectronic technology?

Because the blind and blindness are valuable and offer a unique value t
the human race. It is the responsibility of those with sight to ensure
the blind suffer the least amount possible and are not disadvantaged.
Their uniqueness is worth so much more to the human race than the
normality of sight.