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Monteiro C, Vivas M, Almeida J, Ramalho M, Mota M, Teixeira S, Prieto I. Intraocular Pressure Values using Icare® Rebound Tonometer and Correlation with Postconceptional Age in Premature Infants. JOVR [Internet]. 2023Jul.23 [cited 2024May15];18(3):267–271. Available from: https://knepublishing.com/index.php/JOVR/article/view/13774

https://doi.org/10.18502/jovr.v18i3.13774

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authors

  • Catarina Monteiro

    Catarina Monteiro

    Hospital Professor Doutor Fernando da Fonseca, Amadora, Portugal
  • Maria Vivas

    Maria Vivas

    Hospital Professor Doutor Fernando da Fonseca, Amadora, Portugal
  • Júlio Almeida

    Júlio Almeida

    Hospital Professor Doutor Fernando da Fonseca, Amadora, Portugal
  • Mário Ramalho

    Mário Ramalho

    Hospital Professor Doutor Fernando da Fonseca, Amadora, Portugal
  • Mafalda Mota

    Mafalda Mota

    Hospital Professor Doutor Fernando da Fonseca, Amadora, Portugal
  • Susana Teixeira

    Susana Teixeira

    Hospital Professor Doutor Fernando da Fonseca, Amadora, Portugal
  • Isabel Prieto

    Isabel Prieto

    Hospital Professor Doutor Fernando da Fonseca, Amadora, Portugal

Published Date

  • Jul 23, 2023
This journal is publishing all the articles under Creative Commons Attribution License CC BY 4.0.

Intraocular Pressure Values using Icare® Rebound Tonometer and Correlation with Postconceptional Age in Premature Infants

Journal of Ophthalmic and Vision Research (JOVR) / July–September 2023, Volume 18, Issue 3 / Pages 267–271

Abstract

Purpose: This study aimed to determine a normative range of intraocular pressure (IOP) values measured with Icare rebound tonometer in premature infants and evaluate IOP variation over time and its correlation with the progression of postconceptional age (PCA). By doing so, we also evaluated advantages of this IOP-measuring method in this population when compared to more traditional methods.


Methods: We conducted a single-center prospective study that included premature infants (gestational age ≤32 weeks) who were admitted to the neonatal intensive care unit (NICU) in Hospital Professor Doutor Fernando Fonseca. The study took place between January and December 2021. IOP was measured using Icare tonometer on the occasion of the first retinopathy of prematurity (ROP) screening requested by the NICU and again after a two-week interval if PCA was still ≤37 weeks. IOP measurements were stopped at 37 weeks or if the infant was discharged. The evaluated outcomes were mean IOP values and their correlation with PCA.


Results: Thirty-four eyes of 17 preterm infants with a mean gestational age of 29.4 ± 2.3 weeks and a mean birth weight of 1222.9 ± 361.9 gr were evaluated. The mean IOP registered was 16.1 ± 6.4 mmHg, with a median value of 15.3 mmHg. The top 90 mmHg. The average IOP reduction was 4.8 ± 6.7 mmHg (P = 0.0019) within the two-week interval of PCA.



Conclusion: The mean IOP in premature infants was 16.1 ± 6.4 mmHg and this value significantly
decreased by 4.8 ± 6.7 mmHg every two weeks of PCA.

Keywords:

Intraocular Pressure; Postconceptional Age; Premature Infants; Rebound Tonometry

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