June 2017
Volume 58, Issue 8
Open Access
ARVO Annual Meeting Abstract  |   June 2017
Comparison of intraocular pressure measurements in patients with glaucoma with Perkins, Schiotz and Icare Pro tonometers in supine position.
Author Affiliations & Notes
  • Uriel Moreno Páramo
    Glaucoma, Asociación Para Evitar la Ceguera IAP, Mexico City, DF, Mexico
  • Jesus Jimenez Arroyo
    Glaucoma, Asociación Para Evitar la Ceguera IAP, Mexico City, DF, Mexico
  • Mariana Escalante
    Glaucoma, Asociación Para Evitar la Ceguera IAP, Mexico City, DF, Mexico
  • Felix Gil Carrasco
    Glaucoma, Asociación Para Evitar la Ceguera IAP, Mexico City, DF, Mexico
  • Magdalena Garcia Huerta
    Glaucoma, Asociación Para Evitar la Ceguera IAP, Mexico City, DF, Mexico
  • Mauricio Turati Acosta
    Glaucoma, Asociación Para Evitar la Ceguera IAP, Mexico City, DF, Mexico
  • Jesus Jimenez-Roman
    Glaucoma, Asociación Para Evitar la Ceguera IAP, Mexico City, DF, Mexico
  • Francisca Dominguez
    Oftalmología, Instituto Nacional de Rehabilitación, Mexico City, Mexico
  • Footnotes
    Commercial Relationships   Uriel Moreno Páramo, None; Jesus Jimenez Arroyo, None; Mariana Escalante, None; Felix Gil Carrasco, None; Magdalena Garcia Huerta, None; Mauricio Turati Acosta, None; Jesus Jimenez-Roman, None; Francisca Dominguez, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science June 2017, Vol.58, 5317. doi:
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to Subscribers Only
      Sign In or Create an Account ×
    • Get Citation

      Uriel Moreno Páramo, Jesus Jimenez Arroyo, Mariana Escalante, Felix Gil Carrasco, Magdalena Garcia Huerta, Mauricio Turati Acosta, Jesus Jimenez-Roman, Francisca Dominguez; Comparison of intraocular pressure measurements in patients with glaucoma with Perkins, Schiotz and Icare Pro tonometers in supine position.. Invest. Ophthalmol. Vis. Sci. 2017;58(8):5317.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

Purpose : To compare intraocular pressure (IOP) measurements in patients with diagnosis of glaucoma, taken using Icare Pro (ICP), Perkins (PKN) and Schiotz (SCZ) tonometers, during a nocturnal curve in supine position.

Methods : We performed a cross-sectional, cohort, comparative and descriptive study. Fifty eyes with diagnosis of primary or secondary glaucoma were included. We excluded eyes with penetrant keratoplasty, refractive surgery, irregular astigmatism or more than three diopters, severe ocular surface disease or recent use of contact lens. IOP measurements were taken during a nocturnal curve at 18:00, 21:00, 5:00 and 6:00 hrs. All measurements were performed by the same observer, with the patient in supine position and the tonometers were calibrated prior to each measurement. In each measurement the tonometer order was as follows: ICP, PKN and SCZ, the corneal recovery interval was 5 minutes between each tonometer. The comparability of results given by the three instruments was evaluated with ANOVA, Bland-Altman method and pearson correlation.

Results : The mean age was 62.32±16.4 years. Our principal diagnosis was primary open angle glaucoma (64%). The mean IOP was 14.96 ± 3.1 mmHg with PKN, 15.32 ± 3.08 mmHg with ICP and 13.33 ± 3.75 mmHg with SCZ, there was a statically significant difference in ANOVA test (p <0.001). The correlation between PKN and ICP was excellent (r = 0.973, p <0.001), between SCZ and PKN was poor (r=0.492, p <0.001). The agreement between ICP and PKN was good, limits of agreement were calculated to be -0.92 to +1.71 mmHg with a bias of +0.36±0.71 mmHg, PKN and SCZ tonometers showed a poor agreement with limits of -7.67 to +4.65 mmHg, bias of -1.85±4.12 mmHg.

Conclusions : In supine position, ICP barely overestimates IOP measurements compared with the gold standard (PKN), it can be reliably used to measure IOP fluctuations during night time curves. Despite being used in multiple centers, based on our results, we discourage making clinical decisions on IOP measurements obtained with SCZ, because of its poor comparability with PKN tonometer.

This is an abstract that was submitted for the 2017 ARVO Annual Meeting, held in Baltimore, MD, May 7-11, 2017.

 

Pearson Correlation with a linear regression.

Pearson Correlation with a linear regression.

 

Bland-Altman charts.

Bland-Altman charts.

×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×