rhabdome

/ˈræb.doʊm/
noun
  1. A rod-like structure in the eye of some invertebrates (like insects and crustaceans) that helps with vision by collecting light.
    • Damage to the rhabdome can affect a shrimp's ability to detect movement.
    • The rhabdome is an important part of the compound eye in many insects.
    • Scientists studied the rhabdome to understand how bees see colors.