Smoking is known to be one of the factors that increase the risk of developing a number of diseases. More recently, Chinese scientists have provided new information about the consequences of a bad habit: smoking increases the risk of age-related cataracts - the main cause of blindness in people around the world, according to Medical Xpress.
"Even though you can get rid of cataracts surgically fully restored vision, many people go blind due to the low quality of services offered and the relatively high costs necessary for surgical intervention. Identification of modifiable risk factors for cataracts may help establish preventive measures and reduce financial costs and the emergence of diseases caused by cataracts, "- says Juan E, the author of the work of the Institute of Ophthalmology at Zhejiang University (China).
The research team conducted an analysis of 12 cohorts from Africa, Europe, Asia, Australia and North America, studied eight earlier studies to compare the incidence of age-related cataracts in smokers and in those who have never suffered from addiction.
The results showed that the volunteers who had smoked cigarettes, there was an increased risk of age-related cataracts. Among former smokers, the researchers identified a nuclear cataract (clouding when located in the nucleus of the lens), and sub-scapular (when turbidity is located in the rear of the lens capsule). Meanwhile, the study was not found between smoking and cortical cataract (clouding when distributed throughout the lens cortex, increasing it by ascending edema).
Despite the fact that the results of the overall analysis suggests that smoking increases the risk of age-related cataracts, experts point out that there should be a series of further studies aimed at identifying the main mechanisms of action of nicotine on the human eye and vision.
"We think that our analysis may well inspire some of our colleagues on the larger-scale epidemiological studies. This paper clearly shows that the link between smoking and age-related cataract is caused by certain types of the disease. This indicates that the pathophysiological processes in a variety of different types of cataracts "- said in the conclusion of the author.
For detailed information on the results of the study were published by Chinese scientists in the journal Investigative Ophthalmology & Visual Science.