title: [Symmetry of the anterior segment morphometric measurements in paired eyes using ultrasound biomicroscopy (UBM)].
abstract: OBJECTIVE
  To determine the presence of symmetry of anterior segment morphometric measurements between normal adelphic eyes.
  
  
  METHODS
  One hundred and seventy-eight eyes of 89 subjects with normal ophthalmic examination were examined by ultrasound biomicroscopy (UBM). In each eye, the anterior chamber depth (ACD) as well as 11 other measurements that characterize anterior segment morphometry were measured in 4 different quadrants (superior, nasal, inferior and temporal). The presence of symmetry between right and left eye for each of these variables was then compared for each meridian.
  
  
  RESULTS
  No significant statistical differences were observed concerning anterior segment morphometry between right and left eyes for most measured parameters. Only two variables, in two different meridians, presented statistical significant differences between right and left eyes. The difference, however, was inferior to 0.025 mm, which is beyond the precision of UBM and therefore was not considered to be clinically significant. Pearson correlation analysis demonstrated the presence of a statistical significant correlation, with a moderate intensity for the majority of the variables except ACD, whose correlation was excellent.
  
  
  CONCLUSIONS
  This study demonstrated that symmetry of morphometric measurements between right and left eyes is expected to occur, provided these eyes have similar refractive errors and biometric measurements.
authors.affiliation: Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil. fmarigo@terra.com.br
authors.forename: Flávio de Andrade
authors.initials: Fde A
authors.lastname: Marigo
authors.forename: Edmar Chartone
authors.initials: EC
authors.lastname: de Souza Filho
authors.forename: Patrícia Vianna Brandão
authors.initials: PV
authors.lastname: Marigo
authors.forename: Ana Cláudia Monteiro
authors.initials: AC
authors.lastname: de Oliveira
authors.forename: Sebastião
authors.initials: S
authors.lastname: Cronemberger
mesh_terms: D000328:Adult; D000368:Aged; D000867:Anterior Chamber / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D000869:Anterior Eye Segment / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D001699:Biometry; D005260:Female; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology; D008297:Male; D033401:Microscopy, Acoustic; D008875:Middle Aged; D015233:Models, Statistical; D011446:Prospective Studies; D012030:Refractive Errors / Q000000981:diagnostic imaging; D012163:Retinal Detachment / Q000000981:diagnostic imaging*; D015351:Vision Screening