"he had to poke a hole in it"
I'm guessing that if the ophthalmologist read that, he or she would most definitely wince and roll an eye or two. And coming from a Yale education:-).
Sedation is definitely called for...just the thought of a scalpel "on/into the eyeball"...I've been there.
"A part of the lens capsule that fell into the eye" is a curious way to describe.
In any event, something unexpected/untoward happened and now seems behind? Nothing like a vision threat to make us appreciate it and fear harm to it.
I had a straightforward cataract replacement in 2015. The shield, drops, ointments etc do call for considerable recalling & tending. Beth had to have an inserted lens removed and replaced at a later date due to resulting unsatisfactory vision (which she was told could happen). Her two eyes garnered three cataract surgeries. I helped with a lot of drop applications. Acuity in my other eye is OK and glare-free enough at night, so maybe I can do without any more cataract surgery for a good long time, if not forever.
Surgery almost always sets one back for some period of time before benefits are reaped.