"If your eyes are that damaged, maybe I don't want you working on my gravity room."

His gravity room, as if he didn't park his spaceship on her property and it isn't currently filled with state of the art Capsule Corp technology, some of which is experimental and not yet on the market. Vegeta isn't a fool. He knows that she's likely monitoring now much the room can take for marketing purposes. If it's durable by Saiyan standards, then used in human industry, it would be able to withstand more damage than anything else could.

Really, she should thank him for not saying anything about being a guinea pig.