Walmart ( WMT, Financials) is recalling approximately 850,000 Ozark Trail 64-ounce stainless steel bottles due to a dangerous lid malfunction that has caused serious injuries, including permanent vision loss in two individuals, according to a July 10 alert from the U.S. Consumer Product Safety Commission.

Walmart is recalling about 850,000 stainless steel water bottles because the lid can “forcefully eject” and unexpectedly strike consumers — resulting in permanent vision loss for two people to date.

Walmart is recalling a water bottle after two customers reported vision loss, after being struck in the eye. According to the United States Consumer Safety Commission, the recall involves Ozark Trail 64 oz Stainless Steel Insulated Water Bottles sold with model number 83-662 on the product packaging.