The influence of topical anesthetic and fluorescein on non-contact tonometry measurements using ultra-high-speed dynamic Scheimpflug

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art_MACEDO_The_influence_of_topical_anesthetic_and_fluorescein_on_2023.PDF (1.03 MB)
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0
Tipo de produção
article
Data de publicação
2023
DOI
Scopus
Web of Science
PubMed
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Título do Volume
Editora
NATURE PORTFOLIO
Autores
HATANAKA, Marcelo
BARBOZA, Wilma Lelis
AMBROSIO, Renato
Citação
SCIENTIFIC REPORTS, v.13, n.1, article ID 17864, 7p, 2023
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Unidades Organizacionais
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Resumo
This study aimed to investigate the effects of topical anesthetic and fluorescein drops on intraocular pressure (IOP), central corneal thickness (CCT) and biomechanical properties as measured by Corvis ST (CST-Oculus; Wezlar, Germany) in healthy eyes. A cross-sectional observational study was conducted on 46 healthy patients. The CST measurements were obtained before and immediately after the instillation of topical anesthetic and fluorescein drops. Pre-post instillation data were statistically analyzed. IOP measurements were compared to Goldmann's Applanation Tonometry (GAT), which was also performed after drops instillation. Biomechanical parameters analyzed included applanation 1 velocity, applanation 2 velocity, applanation 1 time, applanation 2 time, whole eye movement, deflection amplitude, and stiffness parameter at first applanation. A statistically significant difference in IOP, both for non-corrected IOP (IOPnct) and biomechanically corrected IOP (bIOP), was observed before and after the instillation of eyedrops. Despite this statistical significance, the observed difference lacked clinical relevance. The IOPnct demonstrated a significant difference pre and post-anesthetic and fluorescein instillation compared to GAT (14.99 +/- 2.27 mmHg pre-instillation and 14.62 +/- 2.50 mmHg post-instillation, versus 13.98 +/- 2.04 mmHg, with p-values of 0.0014 and 0.0490, respectively). Comparable findings were noted when justaposing bIOP to GAT (14.53 +/- 2.10 mmHg pre-instillation and 13.15 +/- 2.25 mmHg post-instillation, against 13.98 +/- 2.04 mmHg, with p-values of 0.0391 and 0.0022, respectively). Additionally, CCT measurements revealed a statistically significant elevation following the administration of topical anesthetic and fluorescein drops (from 544.64 +/- 39.85 mu m to 586.74 +/- 41.71 mu m, p < 0.01. None of the analyzed biomechanical parameters showed statistically significant differences after drops instillation. While the administration of topical anesthetic and fluorescein drops induced a statistically significant alteration in both IOPnct and bIOP readings, these changes were not clinically consequential. Furthermore, a notable statistical rise was observed in CCT measurements post-drops instillation, as determined by CST. Yet, corneal biomechanical parameters remained unaffected.
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https://observatorio.fm.usp.br/handle/OPI/57465
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Coleções
Artigos e Materiais de Revistas Científicas - FM/MOF
Artigos e Materiais de Revistas Científicas - HC/ICHC
Artigos e Materiais de Revistas Científicas - LIM/33