Multiple Choice
A lens consisting of two cylinders of equal power but of opposite designation, one being plus and the other being minus, and their axes set 90 degrees apart is known as a
A) correcting cylinder.
B) cross cylinder.
C) spherical equivalent.
D) prism.
Correct Answer:
Verified
Correct Answer:
Verified
Q30: All of the following are steps performed
Q31: The keratometer measures<br>A)the refractive error of the
Q32: An ophthalmometer is also known as a<br>A)tonometer.<br>B)specular
Q33: The condition in which there is a
Q34: Another name for near-sightedness is<br>A)hyperopia.<br>B)myopia.<br>C)astigmatism.<br>D)emmetropia.
Q36: What can be determined from a retinoscopy
Q37: Ophthalmic assistants are responsible for calibrating the
Q38: In the hyperopic eye, distant objects are
Q39: If a patient's eyesight is very poor
Q40: What part of the cornea does the