a cell cluster found in the compound eye (an eye made up of many elements) of certain insects or other invertebrates with segmented limbs and bodies
Examples of 'retinula' in a sentence
retinula
A few studies have analysed the ocelli and the uncommon “pseudoinverted” retinula cells.
Tobias Lehmann, Martin Heß, Roland R. Melzer 2012, 'Wiring a Periscope – Ocelli, Retinula Axons, Visual Neuropils and the Ancestralityof Sea Spiders', PLoS ONE10.1371/journal.pone.0030474. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)