My dad has lost his right eye vision, and last week his left eye had gt swollen. After going to eye doctor he said the left eye is perfect and we need to consult and ent doctor. After meeting ent doctor, alot many test were done and found out there is a sinus problem. He is having no toothache and the consulting doctor is asking to go undergo operation only. But she is not giving any guarantee for the same. Attaching the ct scan report of the doctor. What should i do ?? Any suggestions ??