Dailies Contact Lenses

Disposable Contact Lens types?

What is the difference between the soft lenses you replace after three months and the two week kind? It seems that there isn't really any difference between a lot of them, they are even made from the same materials by the same company. Wikipedia seems to bear this out as well. So is the difference just in the way they have been tested and approved by the FDA or is there a real difference? I don't need a lecture, I follow my doctor's schedule, just curious.

Public Comments

1. the "real" difference is durability. the 2-week designs are generally thinner, higher water content, less treated to resist deposits, not designed for long term use.