By that logic, if someone is born without a leg, and technology allows us to give them a functional prosthetic, we shouldn't bother, because that would be "discriminating", not giving them back equal functionality to the majority of the human race. It's just amazing that anyone could equate restoring measurable physical deficits in functionality to discrimination.
Very sad psychological defensiveness for your in-born lesser function. "Naturally", my vision is poor enough that I would be completely unable to drive, watch TV, and barely able to read or use a computer without glasses, but if I were to call optometrists and my parents who wanted to give me the full function and opportunities that other humans have discriminatory and evil for giving me glasses, I would definitely be displaying some unjust ego defense.
When the world has been out of focus your entire life, and a pair of glasses suddenly makes it snap into sharp focus, it is nearly indescribably overwhelming. However, it absolutely means I can do jobs I would not be safe doing otherwise (operating machinery, driving, etc.). This type of discrimination is justified for the safety of others. If you have the right type of color blindness that glasses such as these could help, then you _can_ learn and adjust to more proper colors, if you are willing to do so, just as I could adjust to the way the world looked utterly suddenly changing. Just don't be so stodgy and defensive.