title: Comparison of serum sodium and potassium levels in patients with senile cataract and age-matched individuals without cataract.
abstract: OBJECTIVE
  The study was to analyze mean serum sodium and potassium levels in cataract patients and age-matched individuals without cataract.
  
  
  METHODS
  It was a prospective case-control study. Individuals more than 50 years of age who attended our ophthalmic center in the year 2007-2010 were grouped into those having cataract and those without cataract. Mean serum sodium and potassium levels in the cataract groups were calculated and compared with the control group. Statistical software SPSS14 was used for statistical analysis.
  
  
  RESULTS
  Mean serum sodium levels in cataract group was 135.1 meqv/l and 133 meqv/l in the control group. Mean potassium was 3.96 meqv/l in the case study group and 3.97 meqv/l in controls. Mean sodium levels among cases were significantly higher than control group. No difference was seen in the PSC group and control. The difference in mean potassium among the two groups was statistically insignificant.
  
  
  CONCLUSIONS
  Diets with high sodium contents are a risk factor for senile cataract formation and dietary modifications can possibly reduce the rate of progression cataract.
authors.affiliation: Fellow, Sankara Netralaya, Chennai, India.
authors.forename: Gaurav
authors.initials: G
authors.lastname: Mathur
authors.affiliation: Prof and Head, Kasturba Medical College, Manipal, India.
authors.forename: Vijaya
authors.initials: V
authors.lastname: Pai
mesh_terms: D000367:Age Factors; D016022:Case-Control Studies; D002386:Cataract / Q000097:blood* / Q000175:diagnosis; D018450:Disease Progression; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011188:Potassium / Q000097:blood*; D011446:Prospective Studies; D012720:Severity of Illness Index; D012964:Sodium / Q000097:blood*
chemical_list: D012964:Sodium; D011188:Potassium
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