

A factor may be that you don’t see far in water, and details are big (think these black line at the bottom of the pool, not really hard to see)
Attenuation length is shallow water is relatively short, so even with googles and perfect distance vision, you won’t see much behind 10-20m, and may-be 40-80m in deep water (bit there it’s dark).
Mary glasses wearer still have a vision good enough to see decently at 10m especially when they don’t look for ultra small details.

Wearing a shirt and nice trouser helps my business traveller persona dont want to explain an immigration officer why I wear work clothe and steel toe booth for a business meeting.
Anyway, I have a business meeting, need a suit and will be back the next day, so I am rather wearing my business suit, rather than taking a checked in luggage