At my employer (very large company) whose product is not an app (but our apps are used by a lot of our customers you don't have to) we do accessibility for our

At my employer (very large company) whose product is not an app (but our apps are used by a lot of our customers you don't have to) we do accessibility for our mobile apps and web, but only for sightless people, who rarely if ever use our apps due to the nature of our business. However the number of limited sight people, including older folks and those with visual limitations who can still see, are a large number of our app using customers; sadly we ignore them in design. I too have floaters and have trouble with low contrast text and our app designs are a bit hard to see. In a previous job our designers insisted on medium gray text on light gray backgrounds: I actually upped the contrast in my implementations from what was requested, and no one ever noticed thankfully. Imagine if Uber did the same, support voiceover for their driver app (like why would a sightless person drive for Uber!) but ignore those with somewhat limited vision or are using the app in a fixed mount while driving, but are otherwise fine with driving vision.