To learn how color vision works, researchers sent a laser pulse to individual cone cells in the eyes of two men. Colored dots indicate the color of light-detecting pigment in each cone cell. A crosshair shows where a laser flash will appear. After cells were stimulated with the laser, the men indicated what color they perceived. Many red or green cone cells send a white signal instead of a color signal to the brain, the researchers found. Cells surrounded by cones of a different color were more

This is color blindness or color vision deficiency. Most people love their life not knowing they have it. #colorblind #colorblindchallenge #eyetest #eyetestchallenge #colordeficiency #doctor #medtok #doctorexplains | Dr.Z Neurosurgery