Rods and cones


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(Anat.) the elongated cells or elements of the sensory layer of the retina, some of which are cylindrical, others somewhat conical.

See also: Rod

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Up until recently, researchers have thought that when light struck the retina, rods and cones were the only two kinds of cells that react.
Both rods and cones contain proteins known as opsins.
Researchers at the National Institutes of Health have reversed blindness in mice by using a gene injection to 'reprogram' maintenance neurons into rods and cones, the eyes' light-receptive structures.
Especially, highly mature photoreceptors with rods and cones were also acquired with expression of functional proteins and formation of rudimentary outer segment.
Dartnall, "Visual pigments of rods and cones in a human retina," Journal of Physiology, vol.
Study author, Fanny de Busserolles, told OT that the identification of "rod-like cones" challenges the idea that rods and cones are two separate visual systems.
Retinal photoreceptor cells were regarded as rods and cones for many years; however, Provencio et al.
But the retina in mammals is set up so that light encounters the ganglion cells first and the light-detecting rods and cones last.
These are mainly of two types: the rods and cones. Rods function mainly in dim light and provide black-and-white vision, while cones support daytime vision and the perception of color.
Human photoreceptor cells (rods and cones) contain pigments which absorb light.