Prescription AnalysisCâu 41 / 100
Compensated (effective) power differs from the prescribed power mainly due to what?
a.Frame color
b.Lens tint
c.Vertex distance and lens tilt
d.Bridge size
Giải thích
When a high-powered lens sits at a vertex distance or tilt different from where it was refracted, its effective power on the eye changes, so a compensated power is calculated to preserve the intended correction.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Segment height is best defined as what?
- Monocular PD is measured from what to what?
- A binocular distance PD of 64 mm typically corresponds to what near PD range?
- A -8.00 D lens is moved closer to the eye. Its effective minus power does what?
- Neutralizing a lens with a lensmeter finds what point?
- Hand neutralization of an unknown lens uses what technique?
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Đội Ngũ Biên Tập PrepPass · Đối chiếu với ABO (American Board of Opticianry) Certified Optician Exam · Quy trình kiểm tra