Prescription AnalysisCâu 43 / 100
Neutralizing a lens with a lensmeter finds what point?
a.The bevel apex
b.The point where the target is clear with no prism, the optical center
c.The segment top
d.The frame temple
Giải thích
On a lensmeter, the operator centers the lens so the mires (target) are clear and centered, identifying the optical center where there is no prismatic deviation, then reads sphere, cylinder, axis, and add.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A binocular distance PD of 64 mm typically corresponds to what near PD range?
- Compensated (effective) power differs from the prescribed power mainly due to what?
- A -8.00 D lens is moved closer to the eye. Its effective minus power does what?
- Hand neutralization of an unknown lens uses what technique?
- With-the-rule astigmatism typically has the cylinder axis oriented near what?
- An Rx reads OD +1.50 -0.50 x 090, OS +1.50 -0.50 x 090, Add +2.25. What is the near power in each eye?
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