malformalady: Tapetum lucidum eyeshine in a deer. The tapetum lucidum is a layer of specially adapte
malformalady: Tapetum lucidum eyeshine in a deer. The tapetum lucidum is a layer of specially adapted cells behind the retina that reflect light. When a bright light shines on the tapetum, it reflects a bright glow that can be seen from a distance. -- source link