Illinois Vision Certification Practice Test

How is diplopia more accurately described in relation to vision?

1. As double vision

2. As blurred vision

3. As tunnel vision

4. As night blindness

The correct answer is: As double vision

Diplopia is more accurately described as double vision because this term specifically refers to the perception of two images of a single object, rather than a distortion of vision or loss of visual clarity. Individuals experiencing diplopia see two overlapping or separate images instead of one clear image, which can occur due to issues related to eye alignment, muscle control, or neurological conditions affecting visual processing. The other options pertain to different visual impairment conditions; blurred vision refers to a lack of clarity in vision where objects appear out of focus. Tunnel vision describes a condition where peripheral vision is lost, leading to a narrowed field of view, and night blindness refers to difficulty seeing in low light conditions. Each of these terms describes a unique visual issue that does not encompass the specific nature of diplopia.