This means all of the tested contact lenses exceeded 100 ppm, which is equivalent to 100,000,000 ppt, or 50,000 times more than the highest level deemed safe in drinking water by the EPA.

This means all of the tested contact lenses exceeded 100 ppm, which is equivalent to 100,000,000 ppt, or 50,000 times more than the highest level deemed safe in drinking water by the EPA.

Alcon, the global leader in eye care dedicated to helping people see brilliantly, today announced the global launch of TOTAL30 ® Multifocal, the first and only monthly Water Gradient multifocal ...