DispensingQuestion 57 of 100
If a patient complains a new progressive lens has narrow, distorted side vision, what is the most likely cause of unavoidable blur?
a.The AR coating
b.A scratched lens
c.Peripheral aberrations inherent to progressive design
d.Too much tint
Explanation
All progressive lenses have zones of peripheral (lateral) blur and swim as a trade-off for the seamless power progression. Proper fitting minimizes but cannot fully eliminate these peripheral aberrations.
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