A new study has found that patients who have undergone cataract surgery live longer than patients who have not undergone cataract surgery.
A cataract is a gradual clouding of the natural lens inside the eye. Cataract surgery replaces the cloudy lens with a lens implant that corrects your vision.
Previous studies have shown that impaired vision may increase risk of mortality. Cataract surgery to improve vision may help reduce that risk.
The Blue Mountain Eye Study in Australia has gathered data regarding common eye conditions in the aging population. The study compared individuals with similar visual impairment due to cataracts that did and did not undergo cataract surgery. There was a 40 percent lower long-term risk of mortality in the patients that underwent surgery.
Adjustments were made for age and gender as well as other possible mortality risk factors such as diabetes, high blood pressure, heart disease, smoking, and body mass index.
The reason for the correlation between cataract surgery and reduced mortality risk is not fully understood, but theories include greater physical and emotional well-being, greater confidence in living independently after cataract surgery, and increased optimism.