Neurotransmitters are chemicals that transmit signals in the brain and throughout the nervous system. They play a critical role in regulating various functions in the body, including vision.

Several neurotransmitters have been linked to vision, including:

Dopamine: Dopamine plays a role in the regulation of the sensitivity of visual neurons in the retina and the brain's visual cortex, as well as the regulation of visual attention and the perception of contrast and movement.

Serotonin: Serotonin plays a role in the control of the pupil size, which is important for adjusting the amount of light that enters the eye and reaching optimal visual acuity, as well as the regulation of the neural pathways that process visual information in the retina and the brain, specifically in the regulation of the sensitivity of visual neurons and the perception of contrast and color.

Acetylcholine: Acetylcholine plays a role in the regulation of the neural pathways that process visual information in the retina and the brain, specifically in the regulation of the sensitivity of visual neurons and the perception of contrast and color.

Glutamate: Glutamate plays a role in the regulation of the neural pathways that process visual information in the retina and the brain, specifically in the regulation of the sensitivity of visual neurons and the perception of contrast and color.

It's worth noting that vision is a complex process that involves the coordination and interaction of multiple neurotransmitters and other signaling molecules, and the specific mechanisms by which neurotransmitters affect vision are still being studied.

Additionally, imbalances in neurotransmitters levels can disrupt normal visual processing and lead to visual disturbances or vision problems. However, more research is needed to understand the specific mechanisms by which neurotransmitters affect vision and how they may be used to treat vision problems.