Editing Compound eye (section)

===Other===
[[File:DragonFly macrogiants E.jpg|thumb|Compound eye of a [[dragonfly]]]]
Good fliers like flies or honey bees, or prey-catching insects like [[praying mantis]]es or [[dragonfly|dragonflies]], have specialized zones of [[ommatidium|ommatidia]] organized into a fovea area which gives acute vision. In the acute zone the eye is flattened and the facets larger. The flattening allows more ommatidia to receive light from a spot and therefore higher resolution.

There are some exceptions from the types mentioned above. Some insects have a so-called single lens compound eye, a transitional type which is something between a superposition type of the multi-lens compound eye and the single lens eye found in animals with simple eyes. Then there is the [[mysid]] shrimp, ''Dioptromysis paucispinosa''. The shrimp has an eye of the refracting superposition type, in the rear behind this in each eye there is a single large facet that is three times in diameter the others in the eye and behind this is an enlarged crystalline cone. This projects an upright image on a specialized retina. The resulting eye is a mixture of a simple eye within a compound eye.

Another version is the pseudofaceted eye, as seen in [[Scutigera]]. This type of eye consists of a cluster of numerous [[ocelli]] on each side of the head, organized in a way that resembles a true compound eye.

Asymmetries in compound eyes may be associated with asymmetries in behaviour. For example, ''[[Temnothorax albipennis]]'' ant scouts show behavioural lateralization when exploring unknown nest sites, showing a population-level bias to prefer left turns. One possible reason for this is that its environment is partly maze-like and consistently turning in one direction is a good way to search and exit mazes without getting lost.<ref>{{cite journal |vauthors=Hunt ER, etal | year=2014 |title=Ants show a leftward turning bias when exploring unknown nest sites|journal=[[Biology Letters]] |volume=10 |issue=12 |pmid=25540159 |doi=10.1098/rsbl.2014.0945 |pmc=4298197 |page=20140945}}</ref> This turning bias is correlated with slight asymmetries in the ants' compound eyes (differential ommatidia count).<ref>{{cite journal |vauthors=Hunt ER, etal |title=Asymmetric ommatidia count and behavioural lateralization in the ant ''Temnothorax albipennis'' |journal=[[Scientific Reports]] |date=11 April 2018 |volume=8 |issue=1 |page=5825 |doi=10.1038/s41598-018-23652-4 |pmid=29643429 |pmc=5895843|bibcode=2018NatSR...8.5825H }}</ref>

The body of ''[[Ophiomastix wendtii]]'', a type of [[brittle star]], was previously thought to be covered with ommatidia, turning its whole skin into a compound eye, but this has since been found to be erroneous; the system does not rely on lenses or image formation.<ref>{{cite journal | vauthors = Sumner-Rooney L, Rahman IA, Sigwart JD, Ullrich-Lüter E | title = Whole-body photoreceptor networks are independent of 'lenses' in brittle stars | journal = Proceedings. Biological Sciences | volume = 285 | issue = 1871 | pages = 20172590 | date = January 2018 | pmid = 29367398 | pmc = 5805950 | doi = 10.1098/rspb.2017.2590 }}</ref>