The sun must be out

There is a fine balance of what optical practices deem good weather. Wet weather has a knack of emptying appointment books, but there again when the weather gets too bad everyone heads for the sun, that's good for tints and sunnies. Once the sun does come out the high street fills again but too much heat and the punters are in the park, spead-eagled before you can say "factor 30". Ho hum.