Has anybody had any experiences after their loved ones having an anaesthetic and noticed the dementia has got worse? My mum has to have a cataract done (she is blind in the other eye) and we have been told that there is a risk the anaesthetic could make the dementia worse. We have no choice other than for her to have the op or she could go blind. I am just dreading the affects (it's bad enough now - the latter stages) but at the same time I cannot bear the thought of her going blind.