The pathophysiology of cataract remains
tbe focus of current research. Chemical
changes that characterise cataract formation
include the reduction in oxygen
uptake and an initial increase in water content
followed by dehydration. Both the
sodium and calcium content of the lens are
increased, while the ascorbic acid contentis decreased (Shock, 1989). Overall, there
is an accumulation of insoluble lens protein,
chemically altered in such a way that
it loses its most crucial optical property,
i.e. transparency. While a full discussion of
the pathophysiology of cataract is beyond
the scope of this article, the interested
reader may wish to consult Harding
(1993) for an up-to-date overview of current
research in this area.
The pathophysiology of cataract remains
tbe focus of current research. Chemical
changes that characterise cataract formation
include the reduction in oxygen
uptake and an initial increase in water content
followed by dehydration. Both the
sodium and calcium content of the lens are
increased, while the ascorbic acid contentis decreased (Shock, 1989). Overall, there
is an accumulation of insoluble lens protein,
chemically altered in such a way that
it loses its most crucial optical property,
i.e. transparency. While a full discussion of
the pathophysiology of cataract is beyond
the scope of this article, the interested
reader may wish to consult Harding
(1993) for an up-to-date overview of current
research in this area.
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