Anterior Chamber Air Bubble Dynamics With Decreases in Atmospheric Pressure.
Journal
Cornea
ISSN: 1536-4798
Titre abrégé: Cornea
Pays: United States
ID NLM: 8216186
Informations de publication
Date de publication:
23 Jul 2024
23 Jul 2024
Historique:
received:
29
03
2024
accepted:
03
06
2024
medline:
23
7
2024
pubmed:
23
7
2024
entrez:
23
7
2024
Statut:
aheadofprint
Résumé
To evaluate the effect of decreasing barometric pressure on intracameral bubble size and intraocular pressure (IOP) in eyes with varying air fills in the anterior chamber. A total of 36 human donor eyes received 30%, 50%, or 90% anterior chamber air fill. The eyes were subjected to decreases in atmospheric pressure down to 750 hPa, equal to 2400 m in altitude, and were repeatedly imaged using anterior segment OCT while IOP was measured continuously. Eyes with 30% air fill initially showed moderate increases in IOP yet rising to an average of 30.83 mm Hg at 850 hPa (mimicking 1400 m altitude) and 42.08 mm Hg at 750 hPa. Eyes with larger air bubbles showed more acute increases in IOP with increases to an average of 47.25 mm Hg in eyes with 50% air fill at 850 hPa and 63.33 mm Hg at 750 hPa. In eyes with 90% air fill in the anterior chamber, IOP readings with an average of 113.42 mm Hg were observed already at 850 hPa, at which point additional pressure reduction was not performed. While severe increases in IOP were observed with decreased atmospheric pressure in eyes with large air bubbles in the anterior chamber, small and moderately sized bubbles seem to allow for travel over modest changes in altitude.
Identifiants
pubmed: 39042858
doi: 10.1097/ICO.0000000000003623
pii: 00003226-990000000-00624
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.
Déclaration de conflit d'intérêts
The authors have no funding or conflicts of interest to disclose.
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