This class encompasses a variety of light-detecting structures from different phyla with no implication of homology, from the compound insect eye to the vertebrate camera-type eye (distinct classes are provided for each)

uberon

light-detecting organ, visual apparatus

optic, ocular

UBERON:0000970

Note that whilst this is classified as an organ, it is in fact more of a unit composed of different structures: in Drosophila, it includes the interommatidial bristle as a part; we consider here the vertebrate eye to include the eyeball/eye proper as a part, with the eye having as parts (when present): eyelids, conjuctiva,

• internal carotid artery

• pigment epithelium of eye
• transparent eye structure
• photoreceptor array
• eye gland