A paper “Sphenopalatine Phenomen” by Hiram Byrd stated “That the pain of all eye lesions may be stopped by cocaine to the nasal ganglion….is a fact that has been repeatedly observed.” There is a great deal of current research into Sphenopalatine Ganglion Blocks to treat a wide variety of symptoms including chronic daily headache, migraine and trigeminal neuralgia. This old … Continue reading Relief of Wide Variety of Eye Pains with SPG Blocks: Self-Administered SPG Blocks May Be a Treatment of Eye Pain.