Fig. 5
From: European Headache Federation guideline on idiopathic intracranial hypertension
Optical coherence tomography highlighting worsening of papilloedema. OCT is useful for monitoring of changes in papilloedema. a, Right eye infrared (IR) image of a normal small optic nerve in a patient in IIH with ocular remission. Note the tidemark changes of the extent of the previous oedema. b, Colour photograph of right optic nerve with swelling and haemorrhage with recurrence of symptoms. c, Right eye IR image taken at the same time as b. Note the extent of the oedema and the optic nerve is more visible with the OCT image compared to the photo. d, Right eye cross-sectional image half way through the optic nerve head. Note the high line indicates the height of the swelling at this visit and the red volume increase is from the last OCT scan to the most recent one. e, Left eye IR image of a normal small optic nerve in a patient in IIH with ocular remission. Note the tidemark changes of the extent of the previous oedema. f, Colour photograph of left optic nerve with swelling and cotton wool spot changes with recurrence of symptoms. g, Left eye IR image taken at the same time as f. Note the extent of the oedema and the optic nerve is more visible with the OCT image compared to the photo. h, Left eye cross-sectional image half way through the optic nerve head. Note the high line indicates the height of the swelling at this visit and the red volume increase is from the last OCT scan to the most recent one