Ophthalmic OpticsCâu 9 / 100
The base curve of a lens refers to which surface?
a.The bevel edge
b.The reference curve from which the lens is made, usually the front
c.The segment line
d.The temple curve
Giải thích
Base curve is the fixed reference curve used as the starting point for making a lens, conventionally the front surface. The back surface is then ground to achieve the required prescription power.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- The power of a lens surface increases as its radius of curvature does what?
- 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?
- Add power on a multifocal lens represents what?
- 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?
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Đội Ngũ Biên Tập PrepPass · Đối chiếu với ABO (American Board of Opticianry) Certified Optician Exam · Quy trình kiểm tra