International Journal of Medical Sciences · 3 authors, 2 centres
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This case-control study compared serum sodium and potassium levels between 155 senile cataract patients and 155 healthy controls. The study found that serum sodium levels were significantly higher in the cataract group, while potassium levels showed no significant difference.
This is a case-control study of 155 senile cataract patients and 155 normal individuals from an Iranian population, investigating serum sodium (Na+) and potassium (K+) levels. Fasting blood samples were analyzed by flame photometry. The mean serum Na+ level was significantly higher in cataract patients (144.96 ± 6.04 mEq/lit) than in controls (140.88 ± 2.27 mEq/lit; P<0.0001). No statistically significant difference was found in serum K+ levels between the groups (4.20 ± 0.34 vs. 4.15 ± 0.32 mEq/lit). The authors suggest that diets high in sodium may be a risk factor for age-related cataract formation by elevating serum sodium, which could alter aqueous and lens electrolytes. The findings support an association between elevated serum sodium and senile cataract but do not establish causation.
