title: Sensitivity and specificity for detecting early glaucoma in eyes with high myopia from normative database of macular ganglion cell complex thickness obtained from normal non-myopic or highly myopic Asian eyes.
abstract: OBJECTIVE
  We aimed to determine the sensitivity and specificity of the normative database of non-myopic and highly myopic eyes of the macular ganglion cell complex (mGCC) thickness embedded in the NIDEK RS-3000 spectral-domain optical coherence tomography (SD-OCT) for detecting early glaucoma in highly myopic eyes.
  
  
  METHODS
  Forty-seven highly myopic eyes (axial length ≥26.0 mm) of 47 subjects were studied. The SD-OCT images were used to determine the mGCC thickness within a 9-mm diameter circle centered on the fovea. The sensitivity and specificity of the non-myopic database were compared to that of the highly myopic database for distinguishing the early glaucomatous eyes from the non-glaucomatous eyes. The mGCC scans were classified as abnormal if at least one of the eight sectors of the significance map was < 1 % of the normative thickness.
  
  
  RESULTS
  Twenty-one eyes were diagnosed to be non-glaucomatous and 26 eyes to have early glaucoma. . The average mGCC thickness was significantly thinner (80.9 ± 8.5 μm) in the early glaucoma group than in the non-glaucomatous group (91.2 ± 7.5 μm; p <1 × 10(-4)). The sensitivity was 96.2 % and specificity was 47.6 % when the non-myopic database was used, and the sensitivity was 92.3 % and the specificity was 90.5 % when the highly myopic database was used. The difference in the specificity was significant (p < 0.01).
  
  
  CONCLUSIONS
  The significantly higher specificity of the myopic normative database for detecting early glaucoma in highly myopic eyes will lead to fewer false positive diagnoses. The database obtained from highly myopic eyes should be used when evaluating the mGCC thickness of highly myopic eyes.
authors.affiliation: Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Shogoin Kawahara-cho 54, Sakyo-ku, Kyoto, 606-8507, Japan, hideon@kuhp.kyoto-u.ac.jp.
authors.forename: Hideo
authors.initials: H
authors.lastname: Nakanishi
authors.forename: Tadamichi
authors.initials: T
authors.lastname: Akagi
authors.forename: Masanori
authors.initials: M
authors.lastname: Hangai
authors.forename: Yugo
authors.initials: Y
authors.lastname: Kimura
authors.forename: Kenji
authors.initials: K
authors.lastname: Suda
authors.forename: Kyoko Kawashima
authors.initials: KK
authors.lastname: Kumagai
authors.forename: Satoshi
authors.initials: S
authors.lastname: Morooka
authors.forename: Hanako Ohashi
authors.initials: HO
authors.lastname: Ikeda
authors.forename: Nagahisa
authors.initials: N
authors.lastname: Yoshimura
mesh_terms: D000328:Adult; D044466:Asian People / Q000208:ethnology; D016022:Case-Control Studies; D003430:Cross-Sectional Studies; D016208:Databases, Factual; D042241:Early Diagnosis; D005260:Female; D005902:Glaucoma, Open-Angle / Q000175:diagnosis* / Q000208:ethnology; D006068:Gonioscopy; D006801:Humans; D007429:Intraocular Pressure; D007564:Japan / Q000453:epidemiology; D057066:Low Tension Glaucoma / Q000175:diagnosis* / Q000208:ethnology; D008297:Male; D008875:Middle Aged; D047728:Myopia, Degenerative / Q000175:diagnosis* / Q000208:ethnology; D009929:Organ Size; D012016:Reference Values; D015203:Reproducibility of Results; D012165:Retinal Ganglion Cells / Q000473:pathology*; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D041623:Tomography, Optical Coherence; D058609:Visual Field Tests; D014794:Visual Fields