title: The detection of macular analysis by SD-OCT for optic chiasmal compression neuropathy and nasotemporal overlap.
abstract: OBJECTIVE
  To assess the diagnostic performance of the macular parameters detected by spectral-domain optical coherence tomography (SD-OCT) in band atrophy (BA) eyes.
  
  
  METHODS
  Forty-nine BA eyes with permanent temporal hemianopia and 89 normal eyes were enrolled. Any patients who had nasal visual field loss were excluded. Each participant was imaged by three-dimensional (3D) OCT-2000, and 10 × 10 grids in the macula were automatically allocated. The thickness of the macular retinal nerve fiber layer (mRNFL), ganglion cell layer (GCL)+ (GCL+inner plexiform layer [IPL]), and GCL++ (RNFL+GCL+IPL) in both nasal and temporal hemiretina was calculated and compared between the BA and normal eyes. The areas under the receiver operating characteristic curves (AUCs) in these parameters were compared between the nasal hemiretina and the temporal hemiretina.
  
  
  RESULTS
  All the parameters in the BA eyes were significantly thinner than those in the normal eyes. The AUCs for the mRNFL, GCL+, and GCL++ thickness in the nasal hemiretina were 0.890, 0.988, and 0.981, respectively. The parameters in the nasal hemiretina showed significantly higher AUCs than those parameters in the temporal hemiretina. In the temporal hemiretina, the damaged grids in the mRNFL were located in the arcuate areas in each hemifield.
  
  
  CONCLUSIONS
  The inner macular parameters in the nasal hemiretina exhibited high diagnostic abilities to detect BA. The GCL+ was more affected than mRNFL. The characteristic pattern of mRNFL and GCL+ thinning was implicated in the anatomical architecture regarding the nasotemporal overlap of the crossed and uncrossed fibers around the fovea. (www.umin.ac.jp/ctr number, UMIN000006900.).
authors.affiliation: Division of Ophthalmology, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: Azusa
authors.initials: A
authors.lastname: Akashi
authors.affiliation: Division of Ophthalmology, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: Akiyasu
authors.initials: A
authors.lastname: Kanamori
authors.affiliation: Division of Ophthalmology, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: Kaori
authors.initials: K
authors.lastname: Ueda
authors.affiliation: Division of Ophthalmology, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: Yoshiko
authors.initials: Y
authors.lastname: Matsumoto
authors.affiliation: Division of Ophthalmology, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: Yuko
authors.initials: Y
authors.lastname: Yamada
authors.affiliation: Division of Ophthalmology, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Nakamura
mesh_terms: D000236:Adenoma / Q000473:pathology; D000328:Adult; D000368:Aged; D019540:Area Under Curve; D020863:Central Nervous System Cysts / Q000473:pathology*; D003397:Craniopharyngioma / Q000473:pathology; D003941:Diagnostic Techniques, Ophthalmological; D005260:Female; D006423:Hemianopsia / Q000175:diagnosis; D006801:Humans; D008297:Male; D008875:Middle Aged; D009408:Nerve Compression Syndromes / Q000175:diagnosis*; D009412:Nerve Fibers / Q000473:pathology*; D009897:Optic Chiasm / Q000473:pathology*; D010911:Pituitary Neoplasms / Q000473:pathology*; D012372:ROC Curve; D012164:Retinal Diseases / Q000175:diagnosis; D012165:Retinal Ganglion Cells / Q000473:pathology*; D041623:Tomography, Optical Coherence
keywords: band atrophy; chiasmal compression; ganglion cell layer; optical coherence tomography; retinal nerve fiber layer