Understanding patterns in nature has been of interest to researchers. Some of the popular questions have been around why birds flock together, how groups of bees build their honeycombs out of perfect hexagons, how ants navigate finding the shortest path back to the nest, and the likes. Researchers across the world are trying to decipher and explain how and why such specific patterns emerge.

Researchers from Sankara Nethralaya, Chennai, SASTRA University, Thanjavur and Elite School of Optometry, Chennai have studied how the environmental factors of a classroom affect a student’s clarity of vision.