BFSP2 and cataract: DHA levels on BFSP2 Cys326 and βA4-crystallin Cys5 in the UIF significantly increased from the C region to the IN region in lenses within each group: 18–22-year-old in BFSP2 Cys326 (Figure 4A), and 48–64-year-old with and without cataracts in βA4-crystallin Cys5 (Figure 4B).