Abstract
Neutron activation analysis was used to determine the concentrations of 19 elements in normal and senile human cataractous lenses. It was found that the concentrations of Ca, Na, Cl, Eu, Sb, and Fe were significantly higher, and those of K, Rb, Cs, Cr, Mn, Co, Sc, and Ce were significantly lower in senile mature cataractous lenses than those in normal human eye lenses. No changes were found for the concentrations of Se, Zn, Mg, S, and Th in the two groups. Positive correlations between Na, Cl, and Ca and K, Rb, and Cs were found, whereas a significantly negative correlation between Na, Ca, Cl and K, Rb, Cs were found. The roles of these elements in the evolution of cataract are discussed.
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