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    4. What is BC, when ordering contact lens?
    What is BC, when ordering contact lens?

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    0  Views: 610 Answers: 1 Posted: 13 years ago
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      On a spectacle lens, BC - Base Curve - is the curvature in the front surface of the lens. On a contact lens, BC is the curvature on the back surface of the lens. BC is usually between the values 8-10.

      12 years ago. Rating: 1
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