Braden Holtby was forced to leave Saturday's game after Columbus Blue Jackets forward Cam Atkinson's stick hit him through the mask.
The Washington Capitals goaltender appeared to have difficulty opening his eye afterward.
Atkinson was assessed a minor penalty for high-sticking.
Pheonix Copley replaced Holtby, who departed immediately after the incident at the 8:43 mark of the second period.
After the game, Capitals head coach Todd Reirden told reporters, including The Associated Press' Stephen Whyno, postgame that Holtby will be evaluated more Saturday night, adding that he was very concerned when it happened and expects an update Sunday.
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