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. Author manuscript; available in PMC: 2010 Aug 2.
Published in final edited form as: J Vis. 2004 Apr 22;4(4):299–309. doi: 10.1167/4.4.6

Figure 1.

Figure 1

Video clip of infrared photorefraction recorded in the right eye during Edinger-Westphal nucleus stimulated accommodation to an amplitude of 10 D. The stimulus is presented for 4 s. The stimulus indicator “00” turns to “11” (at upper left) when the stimulus is delivered. The tips of the ciliary processes around the lens equator appear and the lens diameter decreases as the eye accommodates. The photorefractive image also shows that the refraction of the eye is changing to a greater degree near the center than at the periphery by virtue of the greater change in the photorefraction brightness gradient near the central region of the eye than at the periphery.