American Board of Opticianry (ABO) Practice Test

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Prepare for the ABO (American Board of Opticianry) Test with interactive flashcards and hundreds of multiple choice questions. Updated for 2024 to help you excel on exam day

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Which test is commonly used to screen for color blindness?

  1. Snellen test

  2. Amsler grid

  3. Visual field test

  4. Ishihara test

The correct answer is: Ishihara test

The Snellen test is used to measure visual acuity, not screen for color blindness. The Amsler grid is used for detecting central visual field defects, which are not indicative of color blindness. The visual field test is used to detect peripheral vision issues, again unrelated to color blindness. The Ishihara test is specifically designed to screen for color blindness by presenting images with hidden numbers or patterns that only those with normal color vision can see.

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