Now that wearing a face mask is becoming an increasing feature of daily life, spare a thought for those of us who wear glasses.
Yes, spectacle-wearers will be finding that when their mask is on, the lenses are prone to fogging up.
The BBC have written a useful page and published a video with recommendations on how best to wear your mask to minimise fogging.
The page can be found by clicking this link: https://www.bbc.co.uk/news/uk-53395513
To see the relevant content, you will need to scroll down to the bit about "How to stop it fogging up my glasses".
Other recommendations for reducing fogging
Here's a suggestion for stopping your glasses from sliding down your nose and for keeping them in the optimum position when you are wearing a face mask: Attach a set of silicone ear grips to your ear rests.
Another tip for reducing lens fogging is to apply an anti fog spray. Jaws Quick Spit is made from natural materials and yet it is effective on visors, moisture chamber glasses, wraparound sunglasses, and ordinary spectacles.
This product can really enhance the anti-fog protection of your lenses without any damage to them.