Certified Ophthalmic Medical Technologist (COMT) Practice Exam

A uniform decrease in sensitivity across the visual field is referred to as what?

1. Generalized reduction in sensitivity

2. Localized scotoma

3. Field depression

4. Tunnel vision

The correct answer is: Generalized reduction in sensitivity

The term that describes a uniform decrease in sensitivity across the visual field is best captured by the phrase "generalized reduction in sensitivity." This terminology reflects a broad and even diminishment of visual sensitivity throughout the entire visual field, rather than being limited to specific areas or spots. In contrast, a localized scotoma refers to a specific area where vision is impaired or lost, indicating a more targeted deficit rather than a widespread one. Field depression also conveys a sense of reduced sensitivity, but it may imply a more defined area rather than a uniform decrease across the entire visual space. Tunnel vision describes a condition where peripheral vision is lost, leading to a narrowed field of vision, which does not align with the concept of uniform sensitivity reduction throughout the visual field. Thus, the correct choice emphasizes the notion of a uniform yet diminished capacity to perceive visual stimuli across the entire visual field.