Abstract
Lens, aqueous humour and serum LDH and its isoenzyme pattern were estimated in 50 patients with senile cataract; 10 each with immature senile cortical cataract, mature senile cortical cataract, hypermature senile cortical cataract, immature senile nuclear cataract and mature senile nuclear cataract. The gradual decrease in total LDH and activity in the lens with advancement of cataract was maximum in hypermature senile cortical cataract. Aqueous LDH and its isoenzyme pattern remained unaltered with the maturity of cataract, and serum LDH and its isoenzyme pattern were found to be within normal limits. The lens LDH activity was found to be not related to the serum and aqueous humour LDH activity, but LDH3 isoenzyme showed declining trend, whereas LDH5 isoenzyme increased with the maturity of cataract. The present study concluded that significant decrease in lens LDH did not bear any relationship to LDH in serum and aqueous humour in cases of senile cataract.
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