Prescription AnalysisCâu 35 / 100
Per ANSI Z80.1 tolerances, verifying a finished single-vision lens checks that the measured power falls within what?
a.An allowed tolerance range of the prescribed power
b.Exactly the prescribed power with zero deviation
c.Half the prescribed power
d.Twice the prescribed power
Giải thích
ANSI Z80.1 defines acceptable tolerances for sphere, cylinder, axis, add, and prism. A lens passes if its measured values fall within the standard's allowed range, not necessarily an exact match.
Trích dẫn luật: ANSI Z80Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Transpose the Rx: -3.00 +2.00 x 045 into minus-cylinder form.
- In the Rx -2.50 -0.75 x 180, what does the 180 represent?
- A patient has Rx OD -1.00 DS. What does 'DS' indicate?
- A lens is decentered 4 mm from the optical center for a +5.00 D lens. How much prism results (Prentice's rule)?
- When reading an Rx, which value is always a plus number on a bifocal?
- Segment height is best defined as what?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với ABO (American Board of Opticianry) Certified Optician Exam · Quy trình kiểm tra