hi, my cats eye went cloudy white in the space of an hour n a half on tuesday night. We took him to the vets yest and it turns out he has a hyperthyroidism which means he has a hormone inbalance, this caused him to have high blood pressure which led him to go blind in his left eye. Have they done any blood tests? Although my cat is 12 it could still be a possibility that your kitten could have this, as not all cats are old who suffer with this. Ask your vet about this as if not treated can lead to alot more problems.