Premier League fans will have noticed that Liverpool manager Jurgen Klopp was on the touchline without his trademark glasses in their 3-0 victory over Norwich.
It was a sight that Liverpool fans would have first noticed during their pre-season training camp when they were taken aback by pictures of the German without his famous specs.
And the Daily Mirror have reported that the Liverpool manager has had treatment on his eyes since the end of last season.
A source told them: 'He's had a bit of treatment on his eyes which went really well.