I am a bit shocked to see you have so many reading glasses.

Vision gets worse with age and unfortunately there are eye conditions that don't have a cure yet, or as in your case, it's not available in the country you live in.

I thought doctors were kind of compelled to stay on top of cutting edge techniques throughout their careers.

It's not up to just doctors. Any drug has to be approved by God knows what authority, so even if she'd know about it, legally she can't prescribe it to you or even advise you to take it, if it's not approved. This is a huge business and who pays more, wins, I mean pharmaceutical companies.