An eye that consists of a cluster of three or four median eyes that form a single structural unit but are separated from one another by pigment layers [ http://www.ncbi.nlm.nih.gov/pubmed/21062451 ]
This is just here as a test because I lose it
Term information
definition
An eye that consists of a cluster of three or four median eyes that form a single structural unit but are separated from one another by pigment layers