Understanding what is the base curve on a contact lens
You probably noticed a tiny number labeled "BC" on your prescription box and wondered what is the base curve on a contact lens exactly. If you've ever felt like your contacts were "scratchy" or felt like they were about to fall out of your eye, there's a good chance the base curve was the culprit. It's one of those technical specs that doesn't get much attention compared to your actual power (how well you can see), but it's arguably just as important for your comfort. ...