As with heart disease and most other chronic health conditions, some risk factors for cataracts—getting up in years, for instance—are beyond our control. But specific behavioral and lifestyle choices we make, such as smoking, may magnify our risk. Cataracts is a multifactorial disease—that is, several factors contribute to its development even within a single individual. Age, Ethnicity, Gender,  Sunlight exposure,  Diabetes, Poor nutrition, Smoking and Alcohol intake. Researchers have proposed several other factors that may increase the risk of cataracts. They include a family history of the disease, myopia (nearsightedness), obesity, use of statin (cholesterol lowering) medications, and high blood pressure.- MDA
By Colleen E. McCarthy
A study recently published in JAMA Ophthalmology found that long-term daily supplementation with selenium and/or vitamin E did not have a beneficial effect on cataract risk in men.
Researchers  conducted an ancillary study within the Selenium and Vitamin E Cancer Prevention Trial (SELECT) Eye Endpoints (SEE) Study. The SELECT was a four-group, Phase 3, randomized placebo-controlled trial of selenium, vitamin E, and a combination of selenium and vitamin E for the prevention of prostate cancer in 35,533 men, beginning in 2001. The SEE trial involved a subset of 11,267 men, beginning in 2003, excluding men with a prior diagnosis of cataract at baseline.
Nutrition’s role in eye care
Participants had a median age of 61 years, with most (64 percent) ranging in age from 55 to 64 years; 81 percent were white and 19 percent were nonwhite; 52 percent had graduated from college; 43 percent were never-smokers, 48 percent were former smokers, and nine percent were current smokers; and 62 percent had one or more alcohol drinks a month and 33 percent rarely or never drank alcohol.
Researchers randomly assigned the SEE participants to receive vitamin E (n = 2844), selenium and vitamin E (n = 2789), selenium (n = 2805), or placebo (n = 2829). Researchers then compared cataract incidence among the selenium vs. no-selenium groups and the vitamin E vs. no–vitamin E groups………
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Source: Optomerytimes