You'd remember the glaucoma pressure test, they puff a burst of air into each eye! Very odd feeling!
I reduced my HbA1c by 34mmols/mol in the space of 4 months and having had a clear retinal screen on diagnosis the following year it showed background retinopathy. I hadn’t a clue I had it as I had no symptoms. My subsequent scan this year was clear again.
My only advice is to consult a dr or optician about your symptoms. Hope it turns out to be nothing to worry about x