Ive asked about this before, and Ive asked my optician but got no where then forgot about it. Last weekend it happened again, and I forgot about it until the goggles thread just reminded me.
My vision goes cloudy in one eye. If you’ve ever slept with a contact lens in and removed it in the morning, you might know what I mean. Its like the lens has clouded your vision, but you remove it and its still cloudy.
Ive only had it happen a few times and only in races; Ironman UK (2017 I think), there was another race maybe Lanza 2019 I cant quite recall, and then last saturday IMVR Kona.
The first time I was wearing lenses, so I thought it might be the lens and/or the waters of Pennington Flash. Since then I dont wear lenses in the swim, I add them in T1, but then it happened again. So not the lens. Then Saturday, no lenses, no weird water, no head injuries from other swimmers…I dont get whats different?
Its never happened in training, and Ive done 3800m in the pool before.
It clears up in something like ten or fifteen minutes, by which time Im on the bike.