Human Eye
Retina
Images not related to this article/Imagens não relacionadas neste artigo
Retinal glial cells enhance human vision acuity
A. M. Labin and E. N. Ribak
Physics Department, Technion - Israel Institute of Technology, Haifa 32000, Israel
Received January 11, 2010
We construct a light-guiding model of the retina outside the fovea, in which an array of glial (Muller) cells permeates the depth of retina down to the photoreceptors. Based on measured refractive indices, we propagate light to obtain a significant increase of the intensity at the photoreceptors. For pupils up to 6 mm width, the coupling between neighboring cells is only a few percent. Low cross-talk over the whole visible spectrum explains also the insensitivity to chromatic aberrations of the eye. The retina is revealed as an optimal structure designed for improving the sharpness of images.
Keywords: vision, retina, acuity, light guiding, mode propagation PACS: 87.19lt, 42.66.Ne
+++++
