Top products for keeping your specs smudge-free tried and tested - Smear and smudge-free solutions to help you see clearly ...

‘Most optometrists will supply you with a bottle of lens cleaner and a microfibre cloth when you first get your glasses, so you can start off with the best option to hand,’ Hardiman-McCartney says.

and most have plastic lenses, which scratch more easily than glass. Clearly, you need to protect your investment. But should you clean lenses with tissues or cloth? When they're wet or dry?