title: Three-dimensional tomographic features of dome-shaped macula by swept-source optical coherence tomography.
abstract: OBJECTIVE
  To study the tomographic and pathomorphologic features of dome-shaped maculas with swept-source optical coherence tomography (OCT).
  
  
  METHODS
  Prospective, cross-sectional study.
  
  
  METHODS
  The macular area of 51 highly myopic eyes (35 patients) with dome-shaped maculas was studied with swept-source OCT at 1050 nm. Three-dimensional (3-D) data sets were obtained with raster scanning covering a 12 × 8-mm(2) area; 3-D images of the posterior pole were constructed by autosegmentation of the retinal pigment epithelium (RPE).
  
  
  RESULTS
  In all reconstructed 3-D images of the RPE, 2 outward concavities were seen within the posterior staphyloma and a horizontal ridge was formed between these 2 concavities. In 42 of these eyes, this horizontal ridge was band shaped. The vertical OCT section through the fovea showed a convex configuration of RPE, but the horizontal section showed an almost flat RPE line. In 9 eyes, 3-D images showed a typical dome-shaped convexity within the staphyloma. OCT scans showed no outward protrusions in the external scleral surface, but marked scleral thinning was seen consistent with the 2 outward concavities of the RPE. The sclera of the fovea (518.6 ± 97.6 μm) was significantly thicker than that in all 4 quadrants of the parafoveal area (range, 277.2 to 360.3 μm; P < .001).
  
  
  CONCLUSIONS
  In highly myopic eyes with a dome-shaped macula, a horizontal ridge is formed within the posterior staphyloma by uneven thinning of the sclera.
authors.affiliation: Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan.
authors.forename: Abdallah A
authors.initials: AA
authors.lastname: Ellabban
authors.forename: Akitaka
authors.initials: A
authors.lastname: Tsujikawa
authors.forename: Akiko
authors.initials: A
authors.lastname: Matsumoto
authors.forename: Kenji
authors.initials: K
authors.lastname: Yamashiro
authors.forename: Akio
authors.initials: A
authors.lastname: Oishi
authors.forename: Sotaro
authors.initials: S
authors.lastname: Ooto
authors.forename: Isao
authors.initials: I
authors.lastname: Nakata
authors.forename: Yumiko
authors.initials: Y
authors.lastname: Akagi-Kurashige
authors.forename: Masahiro
authors.initials: M
authors.lastname: Miyake
authors.forename: Hussein S
authors.initials: HS
authors.lastname: Elnahas
authors.forename: Tarek M
authors.initials: TM
authors.lastname: Radwan
authors.forename: Khaled A
authors.initials: KA
authors.lastname: Zaky
authors.forename: Nagahisa
authors.initials: N
authors.lastname: Yoshimura
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D058452:Axial Length, Eye / Q000473:pathology; D002829:Choroid / Q000473:pathology; D003430:Cross-Sectional Studies; D004108:Dilatation, Pathologic; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D008266:Macula Lutea / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D047728:Myopia, Degenerative / Q000175:diagnosis*; D011446:Prospective Studies; D055213:Retinal Pigment Epithelium / Q000473:pathology*; D012590:Sclera / Q000473:pathology*; D041623:Tomography, Optical Coherence; D014792:Visual Acuity / Q000502:physiology