Tuesday, January 1, 2013

Why is dk/t or the oxygen let in by daily contacts less then bi-weekly or monthly?

The dailies are a lot less then the air optix? I noticed that all daily disposable have less dk/t

Does this mean they are less safe? What level of dk/t is safe, so you don't need to worry about not getting enough oxygen?
>>> Why is dk/t or the oxygen let in by daily contacts less then bi-weekly or monthly?