Certified Ophthalmic Medical Technologist (COMT) Practice Exam

What does a blocked vessel indicate in terms of retinal blood flow?

1. Increased blood flow

2. Decreased blood flow

3. Normal blood flow

4. Irregular blood flow

The correct answer is: Decreased blood flow

A blocked vessel in the context of retinal blood flow indicates a decreased blood flow. When a vessel is obstructed, it restricts the normal flow of blood, which can lead to reduced delivery of oxygen and nutrients to the retinal tissues. This situation can cause ischemic conditions in the retina, potentially resulting in vision problems or loss if not addressed. In contrast, options that suggest increased, normal, or irregular blood flow do not accurately reflect the implications of a blockage. Increased blood flow would not occur since the obstruction impairs circulation, while normal flow would not be possible with a blockage present. Irregular flow, while it could imply some disruption, does not specifically convey the severity of a blocked vessel compared to the definitive impact of decreased blood flow.