Originally Posted by Shanker
So currently, I am prescribed Biomedics 38
contact lens. The BC for my current lens is 8.6. I was looking online and wanted to try acuvue 2 since they seemed better/cheaper online. The only issue is that the BC for Acuvue 2 is 8.7. How would this affect my eyes?
Hello Shanker and welcome to the forum
A difference of 0.1mm in the base curve is unlikely to make much difference for a soft lens, unless you are already at the border line end of the base curve fit for your own eyes.
But, you really need to have your contact lenses
fit checked by a qualified eye care specialist to ensure that the lenses float properly on the eye and ensure that the tear film pumping is adequate to provide oxygen to the eye (in addition to the oxygen that permeates through the actual lens itself). If not a proper fit, you could damage your eyes.
A question. Why do you want to change to Acuvue 2 lenses? They are made of Etafilcon A and although better in oxygen permeability (Dk) than Biomedics, they are hardly the state of the art lens materials made from silicone hydrogel. I would suggest that you consider one of the monthly silicone hydrogel lenses (air optix, Biofinity
, etc. etc.) Your eye care specialist should be able to recommend a suitable lens to you.
You don't have to buy your lenses from your eye care specialist. They have to give yo your prescription on demand and you can use this to buy your lenses on-line, etc. You will have to pay an eye care examination fee as usual of course. If you live in N America you will need a written prescription (for your new lens type) from your eye care specialist in order to buy on-line anyway.