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RELATIVE CONTENTS OF SODIUM, POTASSIUM, WATER AND DRY MATTER IN HUMAN SENILE CATARACTOUS LENSES IN RELATION TO ANTERIOR CAPSULAR/SUBCAPSULAR OPACITY
Author(s) -
KLAUBER A.,
LAURSEN A. BRUUN
Publication year - 1977
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.1977.tb08277.x
Subject(s) - potassium , sodium , chemistry , dry weight , opacity , dry matter , positive correlation , zoology , horticulture , medicine , biology , physics , organic chemistry , optics
In 49 human senile cataractous lenses the sodium and potassium concentrations of the lens water as well as the water and dry weight percentages were examined. It was found justifiable to classify the lenses into three categories on the basis of correlated biomicroscopic and biochemical findings:1 Immature cataractous lenses without anterior capsular/subcapsular opacity (ac‐sco ) were characterized by low C Na L +, high C K L + and low sums of C Na L + + C K L +. 2 Immature cataractous lenses with ac‐sco were characterized by intermediate values of C Na L + and C K L +, as well as high sums of C Na L + + C K L +. 3 Totally opaque lenses (these lenses had 80–100% of ac‐sco) were characterized by high C Na L +, low C K L +, high sums of C Na L + + C K L +, high water, and low dry weight percentages. It was found that in immature cataractous lenses increasing extension of ac‐sco was correlated to increasing C Na L + and increasing ratios of C Na L +/ C Na A + as well as to decreasing C K L + and decreasing ratios of C K L +/ C K A +. The sums of CNa L + + C K A + increased. There was a correlation of the extent of ac‐sco to the water and dry weight percentages of the immature senile cataractous lenses with ac‐sco, viz. a negative correlation for water and a positive one for the dry weight. However, these latter two correlations may be due to chance significances, the level of significance being only 0.05 > P > 0.02 in both instances. Lenses which were estimated to have ≥ 30% of ac‐sco were found to be more opaque than lenses with ≤ 25% of ac‐sco.