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

References in periodicals archive ?
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.
They're using a clever application of optogenetics to take on retinitis pigmentosa: an incurable genetic disease that causes inexorable blindness as it destroys rods and cones in the eye.
But the retina in mammals is set up so that light encounters the ganglion cells first and the light-detecting rods and cones last.
Neural signals from the rods and cones undergo processing by other neurons of the retina.
When the rods and cones die during the course of degenerative blinding diseases, the rest of the retina remains intact but unable to respond to light.
The retina is full of cells, called rods and cones, that sense light.
Visual photoreceptor cells in the retina are of two types: rods and cones.
The retina contains special cells called rods and cones.
Introduction: Rods and cones are classically described as distinct photoreceptor cells with different receptive characteristics mediated by distinct opsins, but recent studies show that salamander blue-sensitive cones and green rods both express an identical opsin.
The rods and cones take visual messages to the brain via the optic nerve.
Most animals have rods and cones, but they don't see as many colors as we do.
The eye is a remarkable contrast detector, with sensors on the retina called rods and cones.