title: [Clinical and electroretinographic profile of commotio retinae].
abstract: OBJECTIVE
  To investigate clinical, anatomic and electroretinographic changes in eyes that suffered blunt ocular trauma with commotio retinae.
  
  
  METHODS
  Patients who presented commotio retinae after unilateral blunt ocular trauma less then 72 hours before were submitted to visual acuity testing, biomicroscopy, binocular indirect ophthalmoscopy, fluorescein angiography, optical coherence tomography and full-field electroretinography. Full-field ERG was repeated after 15 and 30 days.
  
  
  RESULTS
  Sixteen patients were included in the study. On the first examination there was a statistically significant difference between affected and fellow eye in all response amplitudes, without b/a ratio alteration, and a delay in single-flash cone response and 30-Hz flicker implicit time. On the second examination, the difference between the eyes remained for oscillatory potentials, but disappeared on the last examination. In fluorescein angiography, all patients presented mottled hyperfluorescence and hypofluorescent areas, due to alterations in the pigment barrier. On optical coherence tomography, we found optically empty spaces at the site of the lesion.
  
  
  CONCLUSIONS
  Found changes suggested photoreceptor and ganglion cells, but not Müller cell functional alterations, as well as pigment mobilization. These changes disappeared 30 days after the trauma.
authors.affiliation: Universidade Federal de São Paulo, São Paulo, SP, Brasil. lunoia@oftalmo.epm.br
authors.forename: Luciana da Cruz
authors.initials: Lda C
authors.lastname: Noia
authors.forename: Adriana
authors.initials: A
authors.lastname: Berezovsky
authors.forename: Denise de
authors.initials: Dd
authors.lastname: Freitas
authors.forename: Paula Yuri
authors.initials: PY
authors.lastname: Sacai
authors.forename: Solange Rios
authors.initials: SR
authors.lastname: Salomão
mesh_terms: D000293:Adolescent; D000328:Adult; D016022:Case-Control Studies; D003941:Diagnostic Techniques, Ophthalmological; D004596:Electroretinography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010786:Photoreceptor Cells / Q000293:injuries / Q000503:physiopathology; D012160:Retina / Q000293:injuries* / Q000503:physiopathology; D012165:Retinal Ganglion Cells / Q000502:physiology; D012684:Sensory Thresholds; D018709:Statistics, Nonparametric; D013997:Time Factors; D014792:Visual Acuity / Q000502:physiology