Cold Spring Harbor Symposia on Quantitative Biology · 1965 · 82 citations · 0 references
Life SciencesAnatomyZoologyAnterior SegmentInsect MorphologyOcular AnatomyEye DevelopmentRetinal AnatomySensory Organ MorphologyVisual SystemArthropod MorphologyCompound Eye AnatomyPhotoreceptor AnatomyPhotoreceptor CellsPhotoreceptor MorphologyRetina HistologyVisual System MorphologyVisual System Physiology
In contrast to the vertebrates which show a rather uniform architecture of the visual system and especially of the retina, the arthropods have two main types of eyes: small unicorneal eyes with a cup-shaped retina and big compound eyes formed by numerous polyhedrical units or ommatidia. Each ommatidium consists of a dioptric system and a variable number of photoreceptor cells (usually 6, 7, or 8).