A dedicated sea swimmer says falling water quality at one of Kent’s most popular beaches has left him with “nasty” eye and ear infections. Retired barrister Ian Callaway, 62, takes a dip off Deal every morning but no longer puts his head underwater as he needs to be “extra careful”. It comes as the beach has been downgraded from ‘excellent’ to ‘sufficient’ – despite Southern Water spending millions on improving the area. Mr Callaway, who says he does his best not to swallow any water, is now calling on authorities to take urgent action. “Last year I got a painful eye infection after going for …