At what blood alcohol concentration level is impaired vision typically noticed?

Impaired vision is often noticeable when a person's blood alcohol concentration (BAC) reaches 0.08%. At this level, the effects of alcohol on the central nervous system become significant, leading to reduced coordination and slower reflexes. Vision can be affected in several ways, including blurred vision, difficulty focusing, and impaired depth perception.

The 0.08% BAC threshold is also a standard legal limit for driving under the influence in many jurisdictions, as studies and research have shown that most individuals at this level experience noticeable impairments that affect their ability to operate a vehicle safely. As alcohol concentration increases beyond this point, these impairments tend to worsen significantly.