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In glare testing, how many controlled degrees of light does the BAT test deliver when the eye views a Snellen target?

  1. 1

  2. 2

  3. 3

  4. 4

The correct answer is: 3

In glare testing with the BAT (Brightness Acuity Tester), the test provides three controlled degrees of light when the eye views a Snellen target. This controlled light helps in simulating glare conditions to assess how the patient's vision functions in bright light or glare situations. This controlled glare testing is important in evaluating conditions such as cataracts or other issues that can affect vision in bright light environments. Options A, B, and D are incorrect because they do not accurately represent the number of controlled degrees of light that the BAT test delivers during glare testing with a Snellen target.