title: [Comparison between Goldmann, Icare Pro and Corvis ST tonometry].
abstract: OBJECTIVE
  To compare intraocular pressure (IOP) between the new non-contact tonometer Corvis ST (CST), the Goldmann applanation tonometry (GAT) and Icare Pro rebound tonometer (PRO).
  
  
  METHODS
  A total of 178 eyes of 178 healthy subjects were selected for the study. Measurements of IOP were made in a random order with GAT, PRO and CST. Central corneal thickness (CCT) was determined by ultrasound pachymetry. The mean of three valid measurements of each variable was used in the statistical analysis. The relationship between the tonometers was established using Bland-Altman plots.
  
  
  RESULTS
  Mean IOP was 15.5 ± 2.8 mmHg for GAT, 15.4 ± 2.8 mmHg for CST, and 14.6 ± 2.3 mmHg for PRO. The mean differences between pairs of tonometers were: GAT-PRO=0.9 ± 1.7 mmHg (P<.001), GAT-CST: 0.1 ± 2.2 (P=.398), and PRO-CST: -0.8 ±-0.7 mmHg, p<0.001. A positive relationship was detected between CCT and the three tonometers: GAT: r=0.325, P<.001; PRO: r = 0.385, P<.001, and CST: r = 0.428; P<.001.
  
  
  CONCLUSIONS
  The differences found between PRO and GAT were significantly higher than those found between CST and GAT, which showed non-significant differences. The measurements of the three tonometers were affected by the CCT.
authors.affiliation: Servicio de Oftalmología, Departamento de Glaucoma, Hospital Universitario Clínico San Carlos, Madrid, España; Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSSC), Madrid, Spain. Electronic address: paulabaneros@gmail.com.
authors.forename: P
authors.initials: P
authors.lastname: Bañeros-Rojas
authors.affiliation: Servicio de Oftalmología, Departamento de Glaucoma, Hospital Universitario Clínico San Carlos, Madrid, España; Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSSC), Madrid, Spain; RETICS RD07/0062 (Oftalmología), Instituto de Salud Carlos III, "Red temática de Investigación Cooperativa, Proyecto RD 07/0062: Patología ocular del envejecieminto, calidad visual y calidad de vida". Madrid, España; Grupo de Investigación de la Universidad Complutense de Madrid 920415-GR58/08, Madrid, España.
authors.forename: J M
authors.initials: JM
authors.lastname: Martinez de la Casa
authors.affiliation: Servicio de Oftalmología, Departamento de Glaucoma, Hospital Universitario Clínico San Carlos, Madrid, España; Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSSC), Madrid, Spain.
authors.forename: P
authors.initials: P
authors.lastname: Arribas-Pardo
authors.affiliation: Servicio de Oftalmología, Departamento de Glaucoma, Hospital Universitario Clínico San Carlos, Madrid, España; Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSSC), Madrid, Spain.
authors.forename: C
authors.initials: C
authors.lastname: Berrozpe-Villabona
authors.affiliation: Servicio de Oftalmología, Departamento de Glaucoma, Hospital Universitario Clínico San Carlos, Madrid, España; Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSSC), Madrid, Spain.
authors.forename: P
authors.initials: P
authors.lastname: Toro-Utrera
authors.affiliation: Servicio de Oftalmología, Departamento de Glaucoma, Hospital Universitario Clínico San Carlos, Madrid, España; Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSSC), Madrid, Spain; RETICS RD07/0062 (Oftalmología), Instituto de Salud Carlos III, "Red temática de Investigación Cooperativa, Proyecto RD 07/0062: Patología ocular del envejecieminto, calidad visual y calidad de vida". Madrid, España; Grupo de Investigación de la Universidad Complutense de Madrid 920415-GR58/08, Madrid, España.
authors.forename: J
authors.initials: J
authors.lastname: García-Feijoó
mesh_terms: D004867:Equipment Design; D005260:Female; D006801:Humans; D007429:Intraocular Pressure; D008297:Male; D008875:Middle Aged; D011897:Random Allocation; D014065:Tonometry, Ocular / Q000295:instrumentation / Q000379:methods*
keywords: Corvis ST; Glaucoma; Goldmann; Intraocular pressure; Presión intraocular; Rebote; Rebound; Tonometry; Tonometría