Is easy to get use to Bifocal lenses?What type of frame should I choose?

[Kasilof]

Big enough? I was told they will be progressive so no line to separate the reading area and the other side. I never wear them. It will cost me $400 so if I don't get use to them will I be able to bring them back to exchange to normal lenses?

[Jarvisburg]

usually a progressive lens is a little bigger than regular lens. A progressive lens should be a minimum of thirty mm from the top of the lens to the bottom part. It won’t take much time to get used .just treat them as regular ones .whether you are able to take them back for replacement should depend on the seller's policy .so you'd better call the store where you bought them to ask .