title: Association between watershed zone and visual field defect in normal tension glaucoma.
abstract: OBJECTIVE
  To evaluate the association between the watershed zone and glaucomatous optic nerve head (ONH) damage.
  
  
  METHODS
  We performed indocyanine green fluorescence angiography with a scanning laser ophthalmoscope in 54 eyes of 27 patients with normal tension glaucoma (NTG).
  
  
  RESULTS
  We identified 7 eyes of 8 patients (14.8%) with a watershed zone not including the ONH, 32 eyes of 20 patients (59.3%) with the watershed zone partially including the ONH, and 10 eyes of 14 NTG patients (25.9%) with the watershed zone including the ONH. Of the 27 NTG patients, 10 patients (37.0%) had different types in each eye.
  
  
  CONCLUSIONS
  In these patients, the mean deviation of visual field indices was greater in the eye with the watershed zone, which included a larger part of the ONH than in the contralateral eye. Conversely, the eye with the greater mean deviation had a watershed zone that included a larger part of the ONH. The location of the watershed zone appeared to influence the progression of the visual field defect.
authors.affiliation: Department of Ophthalmology, Gifu University School of Medicine, Gifu-ken, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Sato
authors.forename: G
authors.initials: G
authors.lastname: Tomita
authors.forename: E
authors.initials: E
authors.lastname: Onda
authors.forename: Y
authors.initials: Y
authors.lastname: Goto
authors.forename: A
authors.initials: A
authors.lastname: Oguri
authors.forename: Y
authors.initials: Y
authors.lastname: Kitazawa
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002908:Chronic Disease; D004396:Coloring Agents; D018450:Disease Progression; D005260:Female; D005451:Fluorescein Angiography; D005654:Fundus Oculi; D005902:Glaucoma, Open-Angle / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology; D006801:Humans; D007208:Indocyanine Green; D007429:Intraocular Pressure; D008297:Male; D008875:Middle Aged; D009887:Ophthalmoscopy / Q000379:methods; D009898:Optic Disk / Q000098:blood supply*; D009901:Optic Nerve Diseases / Q000150:complications*; D014741:Video Recording; D014786:Vision Disorders / Q000150:complications*; D058609:Visual Field Tests / Q000379:methods; D014794:Visual Fields
chemical_list: D004396:Coloring Agents; D007208:Indocyanine Green