As I posted on your other thread, the only health matters that can affect a visa interview are those which relate to threats to others or to matters such as drug addiction. (See my link on that thread). Eye surgery should not affect your visa interview or the outcome of it.
[Pedantic point: The Green Card scheme only applies to people with nationalities who're under-represented in US society. UK citizens are aren't eligible for Green Cards. It's a regular immigration visa that you're applying for, not a Green Card].