My prescription is - 2.75. What would that be in "20/20" type?

[Northcote]

I'm thinking it's something like 20/200, or so based on answers to similar questions but not sure. Any help is appreciated.

[Palm River]

Yes, prescription - 2.75 can be roughly considered as about 20/200. But this is not exactly accurate. It is only a rough estimate. But it doesn't matter. If you want to buy prescription eyeglasses for vision aids, the optician will make your eyeglasses according to - 2.75. So, you needn't convert your eye prescription into 20/20 types. Hope this can help you.