Skip to main content
. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: Vision Res. 2009 Apr 19;49(14):1775–1783. doi: 10.1016/j.visres.2009.04.014

Figure 2.

Figure 2

Method: Chicks were kept in drums that had printed simulations of HY defocus or MY defocus papered on the walls. (Top left:as viewed with the chick facing the observer) Each eye was exposed briefly to either the HY simulation or MY simulation, during exposures the other eye was patched.

Day 1: (Top right) Each eye was exposed briefly to either the HY simulation or MY simulation for 15 minutes. After the exposures the chicks were kept in the dark for 45 min to one hour. Choroidal thickness was measured at the beginning and end of the procedure.

Day 2: (Bottom) Each eye was exposed briefly to either the HY simulation or MY simulation for 30 min, four times a day. The chick was kept in the dark at other times. During exposures the other eye was patched. GAG synthesis was measured after 19 hours of darkness.