First thanks to the red pill community. This question would not have happened it wasn't for it. That being said. let me jump into the scenario.

Waiting on line at a store, I am complimented on my glasses. what's a good talking point to extend the conversation? This parallels with being color coordinated, a compliment I have also received.

Clearly an ioi, and a proactive step. might be commenting on their appearance. but I'd like to keep the attention focused on me. without fumbling over the words of "omg, no one has ever complimented me before"

it's self-deprecating to say. Yes, I have the worst eyesight. but maybe this works with saying "yeah I have the worst eye-sight, I didn't even see you standing there."