Ophthalmic OpticsCâu 10 / 100
Add power on a multifocal lens represents what?
a.The distance sphere power
b.The prism amount
c.The additional plus power for near vision
d.The cylinder axis
Giải thích
The add is the extra plus power in the reading segment that supplements the distance prescription to help a presbyopic patient see clearly at near. It is always a plus value.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- What is the total power of a lens with a front surface of +6.00 D and a back surface of -2.00 D (thin lens approximation)?
- Vergence describes what property of light?
- The base curve of a lens refers to which surface?
- If the distance Rx is -3.00 D and the add is +2.00 D, what is the total power in the reading portion?
- Vertex distance is the measured space between what two points?
- Chromatic aberration is caused by what?
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Đội Ngũ Biên Tập PrepPass · Đối chiếu với ABO (American Board of Opticianry) Certified Optician Exam · Quy trình kiểm tra