Walmart is recalling 850,000 water bottles after two people suffered permanent vision loss trying to open them. Customers reported being hit in the face with the lid when opening the Ozark Trail brand stainless steel bottles.

The recall by Walmart covers “Ozark Trail 64 oz Stainless Steel Insulated Water Bottles” which have been sold at Walmart’s stores across the US since 2017.

The lids on the 64-ounce stainless steel bottles can eject and strike consumers, two of whom reported permanent vision loss as a result, safety regulators said.