hi I know exactly what you are saying I also get object blind and have trouble choosing between objects like they have lost there definition but I had major skull fractures and a CSF leak, there is no point trying an explanation, others have reported this sensation and have recovered try to see a nuro psychologist they an.t shrinks you will not go blind, go back to your doc, the internet is useful for info only practical help cannot be given here , only support, how long has it been since your injury