<s>[INST] I have had blurred vision coupled with bad headaches and the smell of gasoline for about 4 days now. I have a large and sever neck injury requiring surgery from military injury in 91 where I also had been reported to have a subdural hematoma on my cerebral cortex. I have been really angry and impatient this week. Any help? [/INST] As you are suffering from headach and blurred vision and you had history of operated subdural hematoma then you should go for MRI magnetic resonance imaging of brain to diagnose any collection in brain matter then consult a neuro physician for further treatment.Get well soon... </s>