Sci. STKE, 14 January 2003
Vision Instructing the Pupils
The retinal pigment melanopsin is found in ganglion cells, which are downstream of the classic rods and cone photoreceptors of the visual system. By making knockout mice lacking melanopsin, Lucas et al. (see the Perspective by Menaker) show that this pigment likely responds directly to light to contribute to non-image-forming functions of the visual system, in particular the contraction of pupils to a sudden bright light.
R. J. Lucas, S. Hattar, M. Takao, D. M. Berson, R. G. Foster, K.-W. Yau, Diminished pupillary light reflex at high irradiances in melanopsin-knockout mice. Science 299, 245-247 (2003). [Abstract] [Full Text]
Citation: Instructing the Pupils. Sci. STKE 2003, tw24 (2003).
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