Hi Peter-7465,
welcome to the Apple (user-to-user) Community!
Re: "Apple Watch swim apps for users with poor vision".
"Would be nice if AW allowed me to select reduce list of info to display but in a larger font."
Apple Support have an article online with tips that may be helpful:
Adjust text size and other visual settings on Apple Watch - Apple Support
Eg: If you haven't tried this already: says: "Adjust text size
- Press the side button to open Control Center.
- Tap , then turn the Digital Crown to adjust."
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Re: ".... perhaps a setting I am not familiar with ..."
Another article : Adjust brightness, text size, sounds, and haptics on Apple Watch - Apple Support
says:
Open the Settings app on your Apple Watch, then tap Display & Brightness to adjust the following:
- Brightness: Tap the Brightness controls to adjust, or tap the slider, then turn the Digital Crown.
- Text size: Tap Text Size, then tap the letters or turn the Digital Crown.
- Bold text: Turn on Bold Text.
You can also make these adjustments on your iPhone. Open the Apple Watch app on your iPhone, tap My Watch, tap Display & Brightness, then adjust brightness and text.
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Apple provides some of the accessibility features they make available on Apple Watch: eg: With the right settings, you could have what is displayed on screen read out loud to you, if you wish.
"Siri is often the easiest way to start using accessibility features with your Apple Watch. With Siri, you can open apps, turn many settings on or off, or use Siri for what it does best—acting as your intelligent personal assistant."
See: Use accessibility features with Siri on Apple Watch - Apple Support
VoiceOver helps you use your Apple Watch even if you can’t see the display.
Use simple gestures to move around the screen and listen as VoiceOver speaks each item you select.
If interested: See how to use: VoiceOver
More info: Apple Watch basics with VoiceOver
Resource: Apple Watch User Guide - Apple Support
All the best :-)