Multiple choice

Which of the following cannot be categorized as errors of refraction?

  1. Myopia

  2. Hypermetropia

  3. Presbyopia

  4. Astigmatism

  5. Hemianopia

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Hemianopia or hemianopsia is a type of anopsia where the decreased vision or blindness takes place in half the visual field of one or both eyes. In most cases, the visual field loss respects the vertical midline. The most common causes of this damage include stroke, brain tumor and trauma.