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Validation of sensor for postoperative positioning with intraocular gas

PURPOSE: Surgical repair of retinal attachment or macular hole frequently requires intraocular gas. This necessitates specific postoperative positioning to improve outcomes and avoid complications. However, patients struggle with correct positioning. We have developed a novel sensor to detect the po...

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Autores principales: Brodie, Frank L, Woo, Kelly Y, Balakrishna, Ashwin, Choo, Hyuck, Grubbs, Robert H
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Dove Medical Press 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4888728/
https://www.ncbi.nlm.nih.gov/pubmed/27307698
http://dx.doi.org/10.2147/OPTH.S105347
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author Brodie, Frank L
Woo, Kelly Y
Balakrishna, Ashwin
Choo, Hyuck
Grubbs, Robert H
author_facet Brodie, Frank L
Woo, Kelly Y
Balakrishna, Ashwin
Choo, Hyuck
Grubbs, Robert H
author_sort Brodie, Frank L
collection PubMed
description PURPOSE: Surgical repair of retinal attachment or macular hole frequently requires intraocular gas. This necessitates specific postoperative positioning to improve outcomes and avoid complications. However, patients struggle with correct positioning. We have developed a novel sensor to detect the position of the gas bubble in the eye and provide feedback to patients in real time. In this paper, we determine the specificity and sensitivity of our sensor in vitro using a model eye. METHODS: We assessed the reliability of our sensor to detect when a gas bubble has deviated off a model retinal break in a model eye. Various bubble sizes representing the intraocular kinetics of sulfur hexafluoride gas and varying degrees of deviation from the correct position were tested using the sensor attached to a mannequin head with a model eye. RESULTS: We recorded 36 data points. The sensor acted appropriately in 33 (91.7%) of them. The sensor triggered the alarm every time the bubble deviated off the break (n=15, sensitivity =100%). However, it triggered the alarm (falsely) 3/21 times when the bubble was correctly positioned over the retinal break (specificity =86%). CONCLUSION: Our device shows excellent sensitivity (100%) and specificity (86%) in detecting whether intraocular gas is tamponading a retinal break in a model eye.
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spelling pubmed-48887282016-06-15 Validation of sensor for postoperative positioning with intraocular gas Brodie, Frank L Woo, Kelly Y Balakrishna, Ashwin Choo, Hyuck Grubbs, Robert H Clin Ophthalmol Original Research PURPOSE: Surgical repair of retinal attachment or macular hole frequently requires intraocular gas. This necessitates specific postoperative positioning to improve outcomes and avoid complications. However, patients struggle with correct positioning. We have developed a novel sensor to detect the position of the gas bubble in the eye and provide feedback to patients in real time. In this paper, we determine the specificity and sensitivity of our sensor in vitro using a model eye. METHODS: We assessed the reliability of our sensor to detect when a gas bubble has deviated off a model retinal break in a model eye. Various bubble sizes representing the intraocular kinetics of sulfur hexafluoride gas and varying degrees of deviation from the correct position were tested using the sensor attached to a mannequin head with a model eye. RESULTS: We recorded 36 data points. The sensor acted appropriately in 33 (91.7%) of them. The sensor triggered the alarm every time the bubble deviated off the break (n=15, sensitivity =100%). However, it triggered the alarm (falsely) 3/21 times when the bubble was correctly positioned over the retinal break (specificity =86%). CONCLUSION: Our device shows excellent sensitivity (100%) and specificity (86%) in detecting whether intraocular gas is tamponading a retinal break in a model eye. Dove Medical Press 2016-05-25 /pmc/articles/PMC4888728/ /pubmed/27307698 http://dx.doi.org/10.2147/OPTH.S105347 Text en © 2016 Brodie et al. This work is published and licensed by Dove Medical Press Limited The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License (http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.
spellingShingle Original Research
Brodie, Frank L
Woo, Kelly Y
Balakrishna, Ashwin
Choo, Hyuck
Grubbs, Robert H
Validation of sensor for postoperative positioning with intraocular gas
title Validation of sensor for postoperative positioning with intraocular gas
title_full Validation of sensor for postoperative positioning with intraocular gas
title_fullStr Validation of sensor for postoperative positioning with intraocular gas
title_full_unstemmed Validation of sensor for postoperative positioning with intraocular gas
title_short Validation of sensor for postoperative positioning with intraocular gas
title_sort validation of sensor for postoperative positioning with intraocular gas
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4888728/
https://www.ncbi.nlm.nih.gov/pubmed/27307698
http://dx.doi.org/10.2147/OPTH.S105347
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