Fig. 1

Photographs of cataract subtypes graded using the Lens Opacities Classification System III. Panels a, b, and c indicate typical nuclear color grades 2, 3, and 4, respectively. The nuclear color gradually becomes deep yellow with increasing grade. Panels d, e, and f indicate typical cortical cataract grades 1, 2, and 3, respectively. Retroillumination images indicate cortical opacity (arrow) located in the peripheral lesion of the pupil. The area of cortical opacities expands with increased grade. Panles g, h, and i indicate typical posterior subcapsular grades 1, 2, and 3, respectively. Posterior subcapsular opacity (arrowhead) located near the center of the pupil. The area of posterior subcapsular opacity expands with increasing grade