title: Quantitative assessment of macular edema with retinal vein occlusion.
abstract: OBJECTIVE
  To evaluate the retinal thickness analyzer, a new image analyzer involving laser-slit biomicroscopy, for quantitative assessment of retinal thickness in patients with macular edema secondary to retinal vein occlusion.
  
  
  METHODS
  Fifty-eight patients (central retinal vein occlusion, 22 eyes; branch retinal vein occlusion, 36 eyes) with a clinical diagnosis of macular edema associated with retinal vein occlusion were evaluated. Retinal thickness analysis was performed with the retinal thickness analyzer. A green helium-neon laser slit directed into the eye was scanned to generate optical cross-sections of the retina. Images were analyzed by an automated software algorithm, and a detailed map of the retinal thickness was obtained.
  
  
  RESULTS
  Laser-slit images obtained with the retinal thickness analyzer in patients with macular edema associated with retinal vein occlusion disclosed intraretinal changes such as retinal edema, cystoid spaces, and hemorrhages. Linear regression analysis showed a significant relationship between the macular thickness in the central fovea and corrected visual acuity reported on a logMAR scale (P = .002, adjusted R2 = 0.40 in central retinal vein occlusion; P = .002, adjusted R2 = 0.34 in branch retinal vein occlusion).
  
  
  CONCLUSIONS
  We confirmed the capability of the retinal thickness analyzer to provide rapid and precise evaluation of macular thickening in patients with retinal vein occlusion.
authors.affiliation: Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Japan. suzuma@kuhp.kyoto-u.ac.jp
authors.forename: K
authors.initials: K
authors.lastname: Suzuma
authors.forename: M
authors.initials: M
authors.lastname: Kita
authors.forename: T
authors.initials: T
authors.lastname: Yamana
authors.forename: S
authors.initials: S
authors.lastname: Ozaki
authors.forename: H
authors.initials: H
authors.lastname: Takagi
authors.forename: J
authors.initials: J
authors.lastname: Kiryu
authors.forename: Y
authors.initials: Y
authors.lastname: Ogura
mesh_terms: D000328:Adult; D000368:Aged; D003941:Diagnostic Techniques, Ophthalmological / Q000295:instrumentation; D004487:Edema / Q000209:etiology / Q000473:pathology*; D005260:Female; D005451:Fluorescein Angiography; D005654:Fundus Oculi; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008266:Macula Lutea / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D012160:Retina / Q000473:pathology*; D012164:Retinal Diseases / Q000209:etiology / Q000473:pathology*; D012170:Retinal Vein Occlusion / Q000150:complications*; D014792:Visual Acuity