title: Adaptive optics assisted visualization of thickened retinal arterial wall in a patient with controlled malignant hypertension.
abstract: OBJECTIVE
  We aimed to visualize the retinal arterial wall thickness, assisted by noninvasive adaptive optics scanning laser ophthalmoscopy (AO-SLO).
  
  
  METHODS
  The arterial wall thickness was measured and compared between one normal subject and one patient suffering from malignant hypertensive retinopathy.
  
  
  RESULTS
  Increased arterial wall thickness was revealed with a newly developed AO-SLO system, in a retinal artery of 1-papilla diameter temporal inferior to the optic disc. The average wall thickness, with hypertension, was 18.7 μm, and the wall-to-lumen ratio was 0.44, both bigger than normal.
  
  
  CONCLUSIONS
  AO-SLO enabled us to evaluate the retinal wall thickness in the hypertensive patient. The arterial walls were thickened compared with normal. AO-SLO may facilitate future noninvasive study of arterial walls in human medicine.
authors.affiliation: Department of Ophthalmology and Visual Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
authors.forename: Shigeta
authors.initials: S
authors.lastname: Arichika
authors.affiliation: Department of Ophthalmology and Visual Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
authors.forename: Akihito
authors.initials: A
authors.lastname: Uji
authors.affiliation: Department of Ophthalmology and Visual Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
authors.forename: Nagahisa
authors.initials: N
authors.lastname: Yoshimura
keywords: AO-SLO; hypertensive retinopathy; wall thickness