Ophthalmic OpticsCâu 14 / 100
Which of the following describes a plano lens?
a.+2.00 D of plus power
b.A high minus lens
c.A lens with cylinder only
d.A lens with no refractive power
Giải thích
Plano means flat or zero power. A plano lens has no sphere or cylinder power and does not change vergence, though it may still carry a tint or coating.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- 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?
- Spherical aberration in a lens is best described as what?
- The index of refraction of a material is a ratio comparing what?
- An aspheric lens design primarily reduces what?
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