DD, it should be fairly obvious why jtu thinks aspirin is the culprit. Going from superb eyesight to starting aspirin to having problem with cataracts would certainly make me suspect the aspirin especially in light of the available research. It doesn't actually prove the cataracts were caused by the aspirin, but it indicates that it could be the cause.
As you say, cataracts are more common in people who have diabetes as is retinopathy. There could be other factors as well, so who knows for sure? But since it is not a given that people will develop either of those conditions just because they have diabetes, there must be other factors at play.
At any rate, if I think something I take is causing an adverse reaction, the first thing I do is quit taking it and see if it makes a difference. It's still not proof, but trial and error is often the way medical discoveries are made.
Because we are all different genetically, what may be a problem for some is seldom a problem for all. I don't have proof either that aspirin caused my cataract problems, but I'm mighty suspicious and since it is my eyesight involved, I'm not willing to take chances. What I posted was meant as a word of caution, not as a dire warning.
(By the way, eating something when taking aspirin is no guarantee that a person won't get an upset stomach. I must add, however, that I was not just talking about upset stomach when I mentioned pain and bloathing. I was talking about an ulcer caused by the aspirin. People can bleed to death from that kind of upset stomach. Food with the aspirin won't help.
I've also read that even coated aspirin, which is supposed to be digested in the small intestine rather than the stomach, can cause erosion of the lining of the intestine. Again, a word of caution, not a warning.
You mention that you started taking aspirin because you have type 2 and heart problems are "a major problem for us type 2's." So, do you have heart problems, or are you taking it solely as a preventative? That's certainly your choice and it may be a good choice for you, but if it were me, I wouldn't be taking it just because of the generalization about type 2's.
Jak, type 1 for 41 years with no heart problems