Arrest of migraine or headache with prisms.
D004827:Epilepsy / Q000150:complications; D005139:Eyeglasses; D006261:Headache / Q000209:etiology*; D006801:Humans; D008881:Migraine Disorders / Q000209:etiology*; D013285:Strabismus / Q000150:complications / Q000175:diagnosis / Q000628:therapy*