SORU: aşağıdaki parçaya göre cevaplayınız
According to the passage, in the development of cataracts----.
Cataracts are age-related thickenings in the lenses
of the eyes that impair vision. If not surgically
removed, they ultimately lead to blindness. Cataracts
occur even in well-nourished individuals as a result
of ultraviolet light exposure, oxidative stress, injury,
viral infections, toxic substances and genetic
disorders. Many cataracts, however, are vaguely
called senile cataracts - meaning "caused by aging".
In the United States, more than half of all adults 65
and older have a cataract. Oxidative stress appears
to play a significant role in the development of
cataracts, and the antioxidant nutrients may help
minimize the damage. Studies have reported an
inverse relationship between cataracts and dietary
intakes of vitamin C, vitamin E and carotenoids.
Taking supplements of vitamins C and E seems to
reduce the likelihood of developing age-related
cataracts.