Influence of intrastromal corneal ring implantation on intraocular pressure measurements using different tonometers in keratoconic eyes.

IF 1.2 4区 医学 Q3 OPHTHALMOLOGY
Arquivos brasileiros de oftalmologia Pub Date : 2025-07-21 eCollection Date: 2025-01-01 DOI:10.5935/0004-2749.2024-0217
Christiano Scholte, Júlia Maggi Vieira, Leonardo Torquetti, Fábio Nishimura Kanadani
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引用次数: 0

Abstract

Purpose: This study aimed to evaluate the influence of intrastromal corneal ring segment implants on the intraocular pressure measurements using Goldmann applanation tonometry, rebound tonometry, and noncontact tonometry in keratoconic corneas and analyze the intertonometer agreement.

Methods: We enrolled 74 eyes in this observational and prospective study. Each participant had a complete eye examination, corneal analysis with Scheimpflug Tomography (Pentacam®), and intraocular pressure evaluation with Goldmann applanation tonometry, rebound tonometry, and noncontact tonometry, before and after intrastromal corneal ring segment implantation (on postoperative days 1, 7, 45, and 90). Intertonometer agreement was assessed using Bland-Altman analysis.

Results: The mean age was 29.9 ± 10.2 years, and 47 (63.5%) eyes had keratoconus grade II. Intraocular pressures were higher for noncontact tonometry preoperatively and on 90 postoperative day (mean ± SD: 12.4 ± 2.2 and 12.1 ± 2.2 mmHg, respectively), followed by Goldmann applanation tonometry (11.1 ± 3.0 and 11.2 ± 2.7 mmHg, respectively), and were lower for rebound tonometry (9.7 ± 3.4 and 9.4 ± 3.2 mmHg, respectively). The variation from the Goldmann tonometry on 7 postoperative day to the baseline (p=0.022) and that of noncontact tonometry on 90 postoperative day to the baseline (p=0.021) were statistically significant. The rebound tonometry underestimated intraocular pressure when compared with the Goldmann applanation tonometry by a mean of 1.47 ± 5.19 mmHg. Noncontact tonometry, when compared with Goldmann applanation tonometry, overestimated intraocular pressure by a mean of 1.23 ± 4.15 mmHg.

Conclusion: Despite statistically significant differences between some postoperative periods, the intraocular pressure measurement differences may not be clinically relevant.

角膜晶状体眼角膜环植入术对不同眼压计测量眼压的影响。
目的:本研究旨在评价角膜环段植入物对使用Goldmann压平眼压计、回弹眼压计和非接触式眼压计测量圆锥角膜眼压的影响,并分析眼压计之间的一致性。方法:我们在这项观察性和前瞻性研究中纳入了74只眼睛。每位参与者在角膜环段植入术前后(术后第1、7、45和90天)均进行了完整的眼部检查,使用Scheimpflug断层扫描(Pentacam®)进行角膜分析,并使用Goldmann眼压计、反弹眼压计和非接触式眼压计评估眼压。使用Bland-Altman分析评估眼压仪间一致性。结果:平均年龄29.9±10.2岁,II级圆锥角膜47眼(63.5%)。术前和术后90天非接触式眼压计眼压较高(平均±SD分别为12.4±2.2和12.1±2.2 mmHg),其次是Goldmann压平眼压计(分别为11.1±3.0和11.2±2.7 mmHg),反弹眼压计眼压较低(分别为9.7±3.4和9.4±3.2 mmHg)。术后第7天Goldmann血压计与基线(p=0.022)和术后第90天非接触式血压计与基线(p=0.021)的差异均有统计学意义。与Goldmann压平眼压计相比,反弹眼压计平均低估了1.47±5.19 mmHg。与Goldmann压平眼压计相比,非接触式眼压计平均高估了1.23±4.15 mmHg。结论:尽管术后某些时期的眼压测量差异有统计学意义,但眼压测量差异可能没有临床相关性。
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来源期刊
CiteScore
1.60
自引率
0.00%
发文量
200
审稿时长
6-12 weeks
期刊介绍: The ABO-ARQUIVOS BRASILEIROS DE OFTALMOLOGIA (ABO, ISSN 0004-2749 - print and ISSN 1678-2925 - (ABO, ISSN 0004-2749 - print and ISSN 1678-2925 - electronic version), the official bimonthly publication of the Brazilian Council of Ophthalmology (CBO), aims to disseminate scientific studies in Ophthalmology, Visual Science and Health public, by promoting research, improvement and updating of professionals related to the field.
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