Determination of central corneal clearance in scleral lenses with an optical biometer and agreement with subjective evaluation
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/66585 |
Resumo: | Purpose: To compare three methods to measure central corneal clearance (CCC) during scleral lens wear: subjective (slit lamp), image processed (ImageJ) and with an optic biometer. The optic biometer technique was validated in comparison to an OCT in the first part of the study.Methods: Twenty-two eyes (11 subjects) with healthy corneas were recruited. Three measures of OCT with scleral lens and ten measurements of axial length (AL) with IOLMaster with and without lens were performed. For the second part, 61 eyes (35 subjects) enrolled in a clinical study were selected. Measurements of CCC were done with IOLMaster, SlitLamp and ImageJ.Results: The measurements of CCC indirectly obtained with IOLMaster had a strong correlation with AS-OCT measurements (r = 0.981), showing a mean difference of 122.18 +/- 46.05 mu m (higher with IOLMaster). Regarding the second part, measurements of CCC were 238.66 +/- 95.94 mu m, 250.16 +/- 124.31 mu m and 263.15 +/- 90.60 mu m, for the IOLMaster, SlitLamp and ImageJ, respectively. The correlations were higher for ImageJ vs Subjective measure (r = 0.891) than for IOL vs Subjective (r = 0.748) and IOL vs ImageJ (r = 0.745). Analysis of differences and correlations between SlitLamp and ImageJ through time showed a mean difference of -32.28 +/- 89.95 mu m (r = 0.683) at V1month, 12.53 +/- 59.46 mu m (r = 0.850) at V6months and 11.57 +/- 32.95 mu m (r = 0.940) at V12months.Conclusions: It is possible to measure CCC with IOLMaster, considering AL measured with and without lens and lens thickness. The three methods tested have good correspondence, showing that IOLMaster and ImageJ could be objective techniques to measure CCC. Also, it is possible to improve the agreement of subjective measures when compared to objective measures trough time. |
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Determination of central corneal clearance in scleral lenses with an optical biometer and agreement with subjective evaluationContact lensScleral lensClearanceScience & TechnologyPurpose: To compare three methods to measure central corneal clearance (CCC) during scleral lens wear: subjective (slit lamp), image processed (ImageJ) and with an optic biometer. The optic biometer technique was validated in comparison to an OCT in the first part of the study.Methods: Twenty-two eyes (11 subjects) with healthy corneas were recruited. Three measures of OCT with scleral lens and ten measurements of axial length (AL) with IOLMaster with and without lens were performed. For the second part, 61 eyes (35 subjects) enrolled in a clinical study were selected. Measurements of CCC were done with IOLMaster, SlitLamp and ImageJ.Results: The measurements of CCC indirectly obtained with IOLMaster had a strong correlation with AS-OCT measurements (r = 0.981), showing a mean difference of 122.18 +/- 46.05 mu m (higher with IOLMaster). Regarding the second part, measurements of CCC were 238.66 +/- 95.94 mu m, 250.16 +/- 124.31 mu m and 263.15 +/- 90.60 mu m, for the IOLMaster, SlitLamp and ImageJ, respectively. The correlations were higher for ImageJ vs Subjective measure (r = 0.891) than for IOL vs Subjective (r = 0.748) and IOL vs ImageJ (r = 0.745). Analysis of differences and correlations between SlitLamp and ImageJ through time showed a mean difference of -32.28 +/- 89.95 mu m (r = 0.683) at V1month, 12.53 +/- 59.46 mu m (r = 0.850) at V6months and 11.57 +/- 32.95 mu m (r = 0.940) at V12months.Conclusions: It is possible to measure CCC with IOLMaster, considering AL measured with and without lens and lens thickness. The three methods tested have good correspondence, showing that IOLMaster and ImageJ could be objective techniques to measure CCC. Also, it is possible to improve the agreement of subjective measures when compared to objective measures trough time.This project was supported in part by an unrestricted grant from Bausch & Lomb (Rochester, USA) and Portuguese Science and Technology Foundation projects PTDC/SAU-BEB/098391/2008, PTDC/FIS-OPT/0677/2014 and the Strategic Funding UID/FIS/04650/2013. Authors declare that they do not have any proprietary or financial interest in any of the materials mentioned in this article. The authors want to acknowledge Procornea and Ron Beerten for their support of this project and for providing all of the lenses used in this study.Elsevier Science BVUniversidade do MinhoMacedo-de-Araujo, Rute J.Amorim-de-Sousa, AnaQueirós, A.van der Worp, EefGonzález-Méijome, José Manuel20192019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/66585eng1367-048410.1016/j.clae.2018.11.01330501928https://linkinghub.elsevier.com/retrieve/pii/S1367048418309214info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:42:24Zoai:repositorium.sdum.uminho.pt:1822/66585Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:39:37.920372Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Determination of central corneal clearance in scleral lenses with an optical biometer and agreement with subjective evaluation |
title |
Determination of central corneal clearance in scleral lenses with an optical biometer and agreement with subjective evaluation |
spellingShingle |
Determination of central corneal clearance in scleral lenses with an optical biometer and agreement with subjective evaluation Macedo-de-Araujo, Rute J. Contact lens Scleral lens Clearance Science & Technology |
title_short |
Determination of central corneal clearance in scleral lenses with an optical biometer and agreement with subjective evaluation |
title_full |
Determination of central corneal clearance in scleral lenses with an optical biometer and agreement with subjective evaluation |
title_fullStr |
Determination of central corneal clearance in scleral lenses with an optical biometer and agreement with subjective evaluation |
title_full_unstemmed |
Determination of central corneal clearance in scleral lenses with an optical biometer and agreement with subjective evaluation |
title_sort |
Determination of central corneal clearance in scleral lenses with an optical biometer and agreement with subjective evaluation |
author |
Macedo-de-Araujo, Rute J. |
author_facet |
Macedo-de-Araujo, Rute J. Amorim-de-Sousa, Ana Queirós, A. van der Worp, Eef González-Méijome, José Manuel |
author_role |
author |
author2 |
Amorim-de-Sousa, Ana Queirós, A. van der Worp, Eef González-Méijome, José Manuel |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Macedo-de-Araujo, Rute J. Amorim-de-Sousa, Ana Queirós, A. van der Worp, Eef González-Méijome, José Manuel |
dc.subject.por.fl_str_mv |
Contact lens Scleral lens Clearance Science & Technology |
topic |
Contact lens Scleral lens Clearance Science & Technology |
description |
Purpose: To compare three methods to measure central corneal clearance (CCC) during scleral lens wear: subjective (slit lamp), image processed (ImageJ) and with an optic biometer. The optic biometer technique was validated in comparison to an OCT in the first part of the study.Methods: Twenty-two eyes (11 subjects) with healthy corneas were recruited. Three measures of OCT with scleral lens and ten measurements of axial length (AL) with IOLMaster with and without lens were performed. For the second part, 61 eyes (35 subjects) enrolled in a clinical study were selected. Measurements of CCC were done with IOLMaster, SlitLamp and ImageJ.Results: The measurements of CCC indirectly obtained with IOLMaster had a strong correlation with AS-OCT measurements (r = 0.981), showing a mean difference of 122.18 +/- 46.05 mu m (higher with IOLMaster). Regarding the second part, measurements of CCC were 238.66 +/- 95.94 mu m, 250.16 +/- 124.31 mu m and 263.15 +/- 90.60 mu m, for the IOLMaster, SlitLamp and ImageJ, respectively. The correlations were higher for ImageJ vs Subjective measure (r = 0.891) than for IOL vs Subjective (r = 0.748) and IOL vs ImageJ (r = 0.745). Analysis of differences and correlations between SlitLamp and ImageJ through time showed a mean difference of -32.28 +/- 89.95 mu m (r = 0.683) at V1month, 12.53 +/- 59.46 mu m (r = 0.850) at V6months and 11.57 +/- 32.95 mu m (r = 0.940) at V12months.Conclusions: It is possible to measure CCC with IOLMaster, considering AL measured with and without lens and lens thickness. The three methods tested have good correspondence, showing that IOLMaster and ImageJ could be objective techniques to measure CCC. Also, it is possible to improve the agreement of subjective measures when compared to objective measures trough time. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019 2019-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://hdl.handle.net/1822/66585 |
url |
https://hdl.handle.net/1822/66585 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1367-0484 10.1016/j.clae.2018.11.013 30501928 https://linkinghub.elsevier.com/retrieve/pii/S1367048418309214 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science BV |
publisher.none.fl_str_mv |
Elsevier Science BV |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799132938050207744 |