title: Twenty-four-hour repeatability of diurnal intraocular pressure patterns in glaucomatous and ocular hypertensive individuals.
abstract: OBJECTIVE
  To verify the 24-hour repeatability of diurnal intraocular pressure patterns in glaucomatous and ocular hypertensive individuals.
  
  
  METHODS
  A prospective analysis of 88 eyes from 88 ocular hypertensive or open-angle glaucoma patients was conducted on diurnal tension curves obtained by the same examiner on two consecutive days. The intraclass correlation coefficient test was used for statistical analysis.
  
  
  RESULTS
  Eighty-eight eyes from 88 patients were analyzed. Fifty-seven patients (64.8%) were female. The mean age of all participants was 68.7 (SD 10.8, range 51-79) years. The intraclass correlation coefficient values for measurements at 8 AM, 11 AM, 2 PM, and 4 PM were 0.80, 0.82, 0.83, and 0.86, respectively (all intraclass correlation coefficient values, p<0.001).
  
  
  CONCLUSIONS
  Diurnal intraocular pressure data collected on a single day characterize the diurnal intraocular pressure variability over 24 hours in primary open-angle glaucoma and ocular hypertensive patients.
authors.affiliation: Department of Ophthalmology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil. marcelohatanaka@gmail.com
authors.forename: Marcelo
authors.initials: M
authors.lastname: Hatanaka
authors.forename: Mirko
authors.initials: M
authors.lastname: Babic
authors.forename: Remo
authors.initials: R
authors.lastname: Susanna Junior
mesh_terms: D000368:Aged; D002940:Circadian Rhythm / Q000502:physiology*; D005123:Eye / Q000503:physiopathology; D005260:Female; D005901:Glaucoma / Q000503:physiopathology; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D009798:Ocular Hypertension / Q000503:physiopathology*; D011446:Prospective Studies; D015203:Reproducibility of Results; D013997:Time Factors