Defence We contribute to the reduction of recreational injuries It is estimated that 90% of all sports eye injuries can be prevented with proper use of the right equipment. Since CSA published standards for face protectors and visors for hockey players, the number of reported eye injuries dropped from about 290 per year to less than 10 today. CSA has been certifying hockey helmets and visors for more than 25 years. © Copyright 2005 Canadian Standards Association. All rights reserved.