Which best describes the phenomenon of diffraction?

A patient had a left above-the-knee amputation today.  Postoperatively, the nurse performs which priority action to properly manage the surgical site?

What type of prism is needed to measure or correct an esotropia?

Magnetic forces act on:

A patient with a tumor affecting the optic radiations in the temporal lobe on the left side would have what type of visual field defect?

Parallel light from a retinoscope at 1 meter will produce a(n) ______________ motion refex from an eye that is 2D myopic. _______  motion

Your patient has bifocals and complains of not being able to see where she is walking when wearing her bifocals.  How can you explain this problem?

Each of the following could cause abnormal pupil shape except:

A child with uncorrected high myopia in both eyes may develop:

When preforming retinoscopy, if WITH motion is seen, ________ lenses are required to reach neutrality