The measurement of the acuteness or sharpness of vision is:
A) color vision test.
B) ultrasonography.
C) tonometry.
D) visual acuity.
D
Explanation: A) The color vision test determines color blindness.
B) Ultrasonography is used to determine the length of the eye.
C) Tonometry measures the intraocular pressure.
D) Correct.
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