Dispensing第 70 / 100 题
A patient with a strong Rx wants the thinnest possible lens. Besides high-index material, what frame choice helps most?
a.A small, well-centered frame matching their PD
b.A large aviator
c.A rimless mount only
d.A thick plastic frame
解析
A smaller frame that closely matches the patient's PD minimizes decentration and the amount of lens outside the optical center, reducing both edge thickness (minus) and center thickness (plus).
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