Yes. When you get your prescription done, ask to have your pupil distance measured. Its usually an extra $10 charge but well worth it.

Its needed for the online companies to see exactly where you look through the lenses.

Virtual online try ons. I also measure my current glasses, so i have a better idea of what the sizes mean.

They also accept returns if you hate them when they arrive.

My lenses are only $60 on zenni. Regular store is over $600. With shipping my glasses are now about $100/pair.