Staal was hit in the right eye by a deflected puck while playing against the Philadelphia Flyers on Tuesday, an injury that saw him collapse on the ice before skating off bleeding.
"The injury has improved significantly and (doctors) are optimistic that Marc will make a full recovery," the Rangers said in a statement.
Staal also fell victim to injury last season when he missed the first 38 games due to a concussion.
The 26-year-old has two goals and nine assists in 2013 having played in every game this campaign before his latest setback.
