On 3 March 2013, Elizabeth was admitted to King Edward VII's Hospital as a precaution after developing symptoms of gastroenteritis. She returned to Buckingham Palace the following day. A week later, she signed the new Charter of the Commonwealth. Because of her age and the need for her to limit travelling, in 2013 she chose not to attend the biennial Commonwealth Heads of Government Meeting for the first time in 40 years. She was represented at the summit in Sri Lanka by Prince Charles. She had cataract surgery in May 2018. In March 2019, she opted to give up driving on public roads, largely as a consequence of a car crash involving her husband two months earlier.