Disappointingly, on their third outing my new TYR goggles persistently misted up. No idea why. They’d been fine the first two times and I rinsed them in clean water and kept them in a hard case when not being used, but on my third session they were misting up within fifteen seconds of being put on, which made it quite tricky to read the pace clock.
I’m sure natural oils from eyelashes and skin contribute to the problem of misting up, but I wonder if the water temperature also makes the problem worse? The pool where I normally swim is an early 70s “warehouse” design with minimal insulation, and on cold days such as we’ve had this week there’s a noticeable drop in water temperature despite the pool cover (which I assume is put on every night).