The company is taking this action as a precaution because of reports of a rare, but serious, eye infection, Acanthamoeba keratitis, caused by a parasite.
The link between the solution and the infection was identified as a result of an investigation by the US Centres for Disease Control and Prevention (CDC).
Letters are expected to be dispatched by the sponsor within two working days of the agreed date. Recall advertisements are expected to appear in newspapers within the next week.
Classification system:
Class I defects are potentially life-threatening or could cause a serious risk to health.
Class II defects could cause illness or mistreatment, but are not Class I.
Class III defects may not pose a significant hazard to health, but withdrawal may be initiated for other reasons.
Class I & II recalls are considered to be safety related recalls.