A patient has Ks 43/43.50 at 090, back curve 43D (7.85 mm), and a refraction of -1.75 -0.50 x 180. What contact lens power is required to fully correct the refractive error?

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Multiple Choice

A patient has Ks 43/43.50 at 090, back curve 43D (7.85 mm), and a refraction of -1.75 -0.50 x 180. What contact lens power is required to fully correct the refractive error?

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