Health Canada is warning consumers to avoid using certain lots of ReNu MultiPlus contact lens solution, saying the product that was recalled internationally last week could cause serious eye injury.

Bausch and Lomb on March 6 issued a recall of the solution, which is used to store and clean soft contact lenses. The recall involved ReNu Multi Plus Club Packs and ReNu MultiPlus Vision Packs, in lots GC6038 and GC6052.

The company began an investigation after three customers complained of discoloured solution.

Certain lots were found to contain high levels of iron that may weaken the cleanser's effectiveness, making the user susceptible to eye infections.

Chris Thatcher, vice-president and general manager for Bausch and Lomb Canada, said Monday that it's unlikely the product is still on store shelves, as it was distributed last June.

People who have used the affected lots may experience symptoms of an eye infection, suffering from redness, swelling, discharge, pain, itchiness and increased sensitivity to light or a change in vision. The federal agency advises these consumers to seek medical attention.

Consumers who have the recalled solution should stop using the product and contact the company for a replacement.

For more information, consumers may call Health Canada’s public enquiries line at (613) 957-2991, or toll-free at 1-866-225-0709.

With files from the Canadian Press