DispensingCâu 57 / 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
Giải thích
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.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
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Đội Ngũ Biên Tập PrepPass · Đối chiếu với ABO (American Board of Opticianry) Certified Optician Exam · Quy trình kiểm tra