What do you think of my sisters situation and what our mom said

I want to ask a question: my sister karen (55 years old) wears glasses and hearing aids. (no she is very stylish and she does not look like a geek). However, back in february karen went to her eye doctor for a checkup but karen had to use his associate. the associate made the left lens stronger (and the associate changed the right a little) and when karen started to wear the new eye glasses karen was having problems, karen’s balance was off so the eye glass place put back the old prescription in the left eye and kept the right one the way it was. karen is still having problems with the balance in certain situations (like before): (1) when karen sits down under a light and the light bounces off the lens; (2) when karen goes into a supermarket type light and the light bounces off karen’s lens; (3) if someone is standing very close to karen she gets off balance and has to step back to focus.

The glasses karen wears are for distance. any way karen’s hearing aids have to be cleaned and adjusted and this friday karen is going to her audiologist. karen spoke to the nurse at her eye doctor and the nurse told karen that when hearing aids are not working it could cause eye sight to be off, but karen checked with her audiologist he never heard of such a thing.

Karen and I told our mom the story (well I just listened).

Mom: “you have been drinking a lot of coffee, you should cut down” Me: “yeah but when I take the glasses off I am fine” Mom: “i am not saying the coffee is doing it, I am just saying right now it couldn’t hurt to cut down until you get the eye situation fixed”

So what do you think of my sisters situation and what our mom said