Poor Bella
At least you now know what the problems are.
William's cataracts are checked every 6 months and after a period of change in the first year after diagnosis, and the ophthalmologist saying that if they continued to worsen he would need surgery, they stopped changing and have remained the same for about 3 or 4 years now. The ophthalmologist says William's vision must be like that of a person wearing scratched sunglasses day and night
but it doesn't seem to bother him and at the moment he doesn't need surgery.
I believe there are different types of cataracts, so Bella's may be different to William's, but did the consultant give you any indication if surgery might be an option, or perhaps a necessity, if the cataract develops? Or is that something that the ultrasound will answer?