KRAS and cataract: The nuclear sclerosis classification of cataracts in the phakic eyes, based on the Emery-Little classification, was as follows: 0.00% for NS0, 1.44% for NS1, 43.17% for NS2, 40.29% for NS3, 11.51% for NS4, and 3.60% for NS5 (Fig 5).