Max Verstappen has revealed that he had to deal with eyesight issues after his crash at the 2021 British Grand Prix. The problems arose in the midst of a title battle with Lewis Hamilton. Hamilton and Verstappen made contact at Copse on the first lap of the race as the Mercedes driver tried to execute a bold overtake. The Red Bull star slid into the barriers at high speed. The stewards handed Hamilton a 10-second penalty for the incident, but he was still able to win the race. Verstappen, meanwhile, had to go to hospital for checks. He was fit to race in the Hungarian GP a couple of weeks late…