Off topic:
I had one in 2018, now fixed with a brand-new lens. During the procedure, when I temporarily had no lens in my right eye, I could see a lilac / light-violet glow around the ends of fluorescent lights. They said it was because the retina is sensitive to UV but this is normally filtered out by the lens.
The new lens is wonderful, but now I have a slight colour imbalance: a minor cataract in the left eye gives a yellower image compared to a bluer image in the right.