According to a 2011 study, some fluorescent lights generate UV radiation that is outside of the safe range for human eyes, which may increase UV-related eye illnesses by 12% and induce cataracts and pterygia (a growth of fleshy tissue on the conjunctiva). However, these effects are generally limited to people who work close up with the lights on. For everyone else, the risk is minimal. Fluorescent lights have been around for many years and their use has increased dramatically over that time. This means that more people are working under them and that they are exposed to UV radiation for longer periods of time. However, most experts believe that the risk to public health from fluoro-compounds is relatively small. The only way to be sure whether you are at risk from UV radiation is to check with your doctor. If you have healthy eyes, use protection when working with fluorescent lights for less than an hour per day.