Hello and welcome to public forum
As per the symptoms explained by you in the query you needs to get your CT scan
head done and get admitted in the hospital for observation of any further complication occur. In my opinion the fall causes nerve injury
and finally they results first in hearing loss
and now blurred vision
. You have to rule out any kind of head injury
including nerve injury.
Please Do not drive and take a person with you until everything came back normal. So go to the ER as soon as possible and get your CT head done.