The 42-year-old has been a mainstay on the Tour, and has won six Players Championship events. But his last such title was won five years ago. And so far, nothing has topped a handful of quarter-finals in PDC majors and a last 16 spot at the 2016 World Championship. Caven now languishes at 60th in the Order of Merit. Given that only the top 64 can keep their Tour Card, the Derby thrower is in serious peril. But Caven remains optimistic about his chances. "Obviously we've got a couple of events still to go before the end of the year so it'll be a case of seeing where we're at when the cut-off's done," he said to in an interview. "If I have to go to Q School then maybe that's something we'll look at. "Last year, going into the final Players Championship event I needed a semi-final to qualify for the Players Championship Finals and I got to the semis, so you never say die. "Whether there's enough time to turn it around, who knows? But stranger things have happened. "As long as you've got the right attitude, you can achieve what you want." Caven is unique in the darts world - he only has the power of sight in his left eye. Despite that handicap he has made his way to the top of the game, and has maintained a positive outlook. It's that attitude which is helping him contemplate a future outside the Pro Tour. "I'm 42 so I'm not too old. I'm still quite confident that I can put a good show on when I have to," he said. "Going forward I'm going to seriously look at it and consider what the best option is but my future will be within darts anyway. "Frustration does creep in now and again but I'm always confident and I'll keep my chin up. "It's certainly not the end if this year I do lose my card."