Ophthalmic OpticsQuestion 21 of 100
A prism deviates light in which direction?
a.Toward the base
b.There is no deviation
c.Toward the apex
d.Along the axis
Explanation
Light passing through a prism bends toward the thick base, while the image seen through it displaces toward the thin apex. Prism power is measured in prism diopters.
Practice all 100 questions free — no signup required.
Related questions on this topic
- Compared with crown glass, polycarbonate is valued mostly for what property?
- Snell's law governs which optical phenomenon?
- As the index of refraction of a lens material increases, for a given power the lens can be made which way?
- One prism diopter of power displaces an image by how much and at what distance?
- Which lens curve produces plus power?
- Effective power change from vertex distance is most significant for which prescriptions?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against ABO (American Board of Opticianry) Certified Optician Exam · How we review