Oxidative stress in the eye is lowered with the antioxidants lutein and zeaxanthin
A cataract clouds the lens of the eye, reducing vision. Doctors said oxidative stress plays a major role in cataracts and prior studies found the antioxidants lutein and zeaxanthin lowered chances. Lutein and zeaxanthin are the principal carotenoids in the eye that protect from oxidative stress.
In one study, researchers measured circulating antioxidants in 1,689 men and women, aged 61 to 80. Compared to those with the lowest levels, those with the highest levels of lutein or zeaxanthin were 42 and 41 percent, respectively, less likely to have nuclear cataract, a type of cataract that forms in the nucleus of the lens of the eye and is most common with aging.