Question

for some people, alcohol can cause an uncontrolled __________ of the eyes, making good vision almost impossible.

Answer 1

I think its Blinking 

Answer 2

The correct answer is Vibration.

This is a condition in which there is a involuntary eye movement. In this the eye seems to be dancing eye and the vision is not clear. The vibration in eyes is due to consumption of alcohol. In normal condition the blinking of eyes is voluntary but due to consumption of alcohol the condition changes and the blinking of eyes becomes involuntary(neurological disorder).