Beau Scott, who teaches in the fourth and fifth grade at Dayton Elementary School in Ohio, was given a special present by his students. Scott is color blind, like almost 300 million others. His students decided to give him the option to see more color with the surprise gift of color-seeing glasses, which they raised money to buy. They hid this treat by asking him to pretend he was joining a Quidditch match as Harry Potter - hence the "Quidditch goggles."
"I'm trying not to cry," said the grateful instructor.
Individuals with colorblindness perceive light signals with their eyes in a unique or imbalanced way that prevents them from seeing colors in a common fashion. Color blindness is said to be characterized by "photopigment defects in the three different kinds of cones [(photoreceptor cells)] that respond to blue, green and red light." Red-green color blindness is the most common and blue-yellow color blindness is the second-most common, while complete color blindness is unusual. Color-seeing glasses are designed to filter light and correct for the perceptual deficiencies.
quote source: https://nei.nih.gov/health/color_blindness/facts_about