Stemmata are a variety of this structure found in insect larvae, but adult 
Stemmata are a variety of this structure found in insect larvae, but adult insects often have an "apposition" type made of hexagonal ommatidia. Recoverin and crystalin are proteins in this structure. The hyaloid canal passes through the vitreous humor that occupies most of these organs. Vitamin A consumption affects the cones of these organs, which are less sensitive than rods. Macular degeneration and cataracts are conditions that can affect these organs. For 10 points, name these organs in which light is focused onto the retina by the lens, facilitating sight.
Stemmata are a variety of this structure found in insect larvae, but adult insects often have an "apposition" type made of hexagonal ommatidia.
eyes