Ophthalmic OpticsQuestion 20 of 100
As the index of refraction of a lens material increases, for a given power the lens can be made which way?
a.Thinner
b.Thicker
c.Softer
d.More curved
Explanation
Higher-index materials bend light more efficiently, so less material and shallower curves are needed to achieve a given power, producing a thinner and often lighter lens.
Practice all 100 questions free — no signup required.
Related questions on this topic
- An aspheric lens design primarily reduces what?
- Compared with crown glass, polycarbonate is valued mostly for what property?
- Snell's law governs which optical phenomenon?
- A prism deviates light in which direction?
- One prism diopter of power displaces an image by how much and at what distance?
- Which lens curve produces plus power?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against ABO (American Board of Opticianry) Certified Optician Exam · How we review