Is it a coincidence? Twice in the space of two days (in separate branches) we've had darts players in who are struggling to play their favourite sport as their eyesight has deteriorated.
One has to ask his friends if he's hit a double and the inevitable reply is "Hit a double? You've not even hit the board!" 🤣
Clearly their distance vision has depleted slightly. This happens to most people as they pass 40. The solution is obvious - get a decent eye test and a pair of glasses (usually with only a minor prescription) and sharpen up your vision.
We can't hep you play darts better, but at least you'll see clearly where they land!