Whether you believe in evolution or not, evolutionary understanding has not advanced the cause of correcting defective vision.
That's because defective vision doesn't prevent people from reproducing. Evolution only needs you to be "good enough".
The new advances such as laser surgery for correcting detached retinas and for correcting vision are all human designed advancements negating any future evolutionary changes.
No, even with surgical corrections, the genes for those bad eyes will still get passed on. Future evolution changes are NOT negated. You'd have to modify your genome for that.
Evolution has in essence evolved its way out of existence.
Not quite. There'd still be sexual selection. It isn't "out of existence", its just different selective pressures. Too, you never know when there's going to be an environmental change that could throw a total curveball that causes the more familiar selective pressures to once again take over.
But this is all besides the topic:
Its obvious that sense organs like the eye can, indeed, evolve. Dontcha think?