Term: eye detection of external stimulus
Name: eye
Synonyms: eyes
Definition: Cavitated compound organ that consists of the neural retina, lens, cornea and iris and is the sensory apparatus of the visual system.
Ontology: Anatomy Ontology [ZFA:0000107]

Name: detection of external stimulus
Synonyms: perception of external stimulus
Definition: The series of events in which an external stimulus is received by a cell and converted into a molecular signal.
Ontology: GO: Biological Process [GO:0009581]    QuickGO    AmiGO