Thursday, November 16, 2017

Explain my Contact lense prescription to me?

So I wen't to the eye doctor today so they could check up on my contacts and such, and i got a sheet that had my contact lens prescription on it. However, I do not understand what any of it means and, here is what is says:
Right Base curve: 8.6, Right Diameter: 14.2, Sphere: -2.75

Left base curve: 8.6, Left Diameter: 14.2, Sphere: -2.50

What does this mean? How do I figure out what my vision out of 20 is (like perfect vision is 20/70)
I tried looking it up on google but I had no success, so maybe one of you guys know how to read these types of prescriptions?
Thanks!
Added (1). I meant 20/20 not 20/70 haha

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