trying to save snowball

Snowball was rescued at 4 - 5 weeks old.At the time he was doing ok altho we did notice he went cross eyed alot.2 weeks ago he started having seizures we thought they were from an infection and treated him with antibiotics.The seizures are getting worse with each passing day.The vet says we can try putting him on a seizure medication but before she can do that we have to run some tests and also treat for parasites and fleas.she wants  a cat scan also but said that was optional the blood work is not.My daughter has become very attached to this kitten even giving up our camping trp last week to stay home and care for it.Her birthday is next week and all she wants is to be able to pay the vet bill so please please help even if you can only donate a couple bucks it will add up and please share with anyone you know who may help this kitten.If you would rather donate directly to the vets office for his care I can give you that info