“…This structure differs greatly between dogs and humans (see also Figure S1). The ratio of lens-to-globe is 1:18 in dogs but 1:10 in humans (Beaver, 2009), the lens diameter is 9.5-11 mm (breed dependent) in dogs but 11 mm in humans , its anterior-posterior length (thickness) is ~7 mm in dogs but ~4 mm in humans (Coile, 2007;Igarashi, 2005;, and its anterior radius of curvature is 7.6 mm in dogs but 12 mm in middle-aged humans (Brown, 1974;Dubbelman & Van der Heijde, 2001; see also Table S1). Furthermore, in comparison with humans, the composite fibers of the dog lens are arranged to have a less flexible structure , and the ciliary body that controls the dynamic shape of the lens is also weaker .…”