Alcohol or any other drug which reduces the supply of oxygen in the blood stream can impair the sensitivity of the cones which in turn?

impairs vision by diminishing the ability to perceive colors and fine details. Cones are responsible for color vision and visual acuity, so reduced oxygen levels can lead to blurriness and difficulties in distinguishing between shades. This effect can hinder overall visual performance, impacting daily activities and safety. Long-term use of such substances may also contribute to permanent vision issues.