Figure 4

Figure 4 : 

Photographs of pig lenses taken with a slit lamp using an orange background for a clearer image. a: freshly removed lens; b: lens irradiated for 20minutes at an intensity of 20j/cm2; a low density anterior subcapsular cataract (ASC) can be seen (white arrow); c: a dense ASC cataract produced by radiation at 20j/cm2 intensity for an exposure time of half an hour.