My Father had a brain stroke 8 months ago which cause double vision and poor balance. He is still suffering headache and poor balance. He can't walk without support. Its been 8 months now but still there is no improvement. Doctor has Prescrb Vasograin, Tryptodin 30 and prazodiv 50. With other tablets of diabetes and hypertension. he is 60'years old. do i need to visit another doctr as time is llo