Which of the following is an effect of alcohol on eye movement?

Alcohol consumption has a significant impact on various functions of the body, including eye movement. When a person consumes alcohol, it affects the brain's ability to process information and coordinate muscular responses, including those that control eye movement.

One of the notable effects of alcohol is that it generally decreases the range and accuracy of eye movement. This results in impaired vision and difficulty in tracking moving objects, which can lead to challenges in maintaining proper focus on targets. This impairment can be particularly dangerous while driving, as the ability to quickly and accurately adjust one's gaze is crucial for safe operation of a vehicle.

In contrast, the other options do not accurately reflect the physiological effects of alcohol on eye movement. For example, alcohol does not enhance coordination or increase focus; in fact, it has the opposite effect. Additionally, the claim that alcohol has no effect on eye movement contradicts numerous studies showing that alcohol alters visual processing and motor function. Thus, recognizing that alcohol decreases the range of eye movement highlights the significant risks associated with impaired visual acuity and coordination.