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The Role of Corneal Biomechanics in the Assessment of Ectasia Susceptibility Before Laser Vision Correction

2021-02Journal article Open access
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dc.contributor.authorBaptista, Pedro Manuel
dc.contributor.authorMarta, Ana
dc.contributor.authorMarques, Joao Heitor
dc.contributor.authorAbreu, Ana Carolina
dc.contributor.authorMonteiro, Sílvia
dc.contributor.authorMenéres, Pedro
dc.contributor.authorPinto, Maria do Céu
dc.date.accessioned2023-10-19T11:21:57Z
dc.date.available2023-10-19T11:21:57Z
dc.date.issued2021-02
dc.description.abstractPurpose: To describe the tomographic and corneal biomechanical status of a sample of eyes excluded from LVC and to present the differences in biomechanical behavior in relation to cutoffs of clinical- and tomography-based screening methods used in clinical practice. Patients and methods: Observational cross-sectional study including 61 eyes from 32 consecutive patients who were excluded from LVC in our department. Clinical and demographic data were collected from the patients' clinical records. Tomographic data was assessed with a Scheimpflug camera (Pentacam, OCULUS®). Ablation depth (µm) and residual stromal bed (µm) were calculated by the WaveLight® EX500 laser system software (Alcon, EUA). The corneal biomechanical assessment was made through ultra-high speed Scheimpflug imaging during noncontact tonometry (Corvis ST, OCULUS®). Several ectasia risk scores were analyzed. Results: Mean age was 31.0±6 years old and mean manifest spherical equivalent was -2.01 ± 2.3D. Belin-Ambrósio deviation index was the tomographic parameter with higher proportion of eyes within the ectasia high risk interval. In the biomechanical assessment, more than 95% of eyes met the criteria for ectasia susceptibility in four of the first generation and in two of the second generation parameters. In a cutoff based comparative analysis, eyes with Kmax ≥45.5 D, eyes with VCOMA <0 and eyes with ARTmax ≤350 presented significantly softer corneal biomechanical behavior. Conclusion: The majority of eyes excluded from LVC in the present study met the criteria for ectasia susceptibility in several biomechanical parameters, validating the clinical and tomographic based screening prior to LVC in our center. Differences found in the biomechanical assessment regarding cutoffs used in clinical practice highlight its differential role in characterizing risk profile of these patients. Tomography should not be overlooked and the integration of all data, including treatment-related parameters, can be the future of risk ectasia screening prior LVC.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBaptista PM, Marta AA, Marques JH, et al. The Role of Corneal Biomechanics in the Assessment of Ectasia Susceptibility Before Laser Vision Correction. Clin Ophthalmol. 2021;15:745-758. doi:10.2147/OPTH.S296744pt_PT
dc.identifier.doi10.2147/OPTH.S296744pt_PT
dc.identifier.issn1177-5467
dc.identifier.issn1177-5483
dc.identifier.urihttp://hdl.handle.net/10400.16/2823
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherDove Medical Presspt_PT
dc.relation.publisherversionhttps://www.dovepress.com/the-role-of-corneal-biomechanics-in-the-assessment-of-ectasia-suscepti-peer-reviewed-fulltext-article-OPTHpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectCorvispt_PT
dc.subjectcorneal biomechanicspt_PT
dc.subjectectasiapt_PT
dc.subjectkeratorefractive surgerypt_PT
dc.subjecttomographypt_PT
dc.subjectultra-high speed Scheimpflug camerapt_PT
dc.titleThe Role of Corneal Biomechanics in the Assessment of Ectasia Susceptibility Before Laser Vision Correctionpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceNew Zealandpt_PT
oaire.citation.endPage758pt_PT
oaire.citation.startPage745pt_PT
oaire.citation.titleClinical Ophthalmologypt_PT
oaire.citation.volumeVolume 15pt_PT
person.familyNameBaptista
person.familyNameMarta
person.familyNameMarques
person.familyNameAbreu
person.familyNameMonteiro
person.familyNameMeneres
person.givenNamePedro Manuel
person.givenNameAna
person.givenNameJoao Heitor
person.givenNameAna Carolina
person.givenNameSílvia
person.givenNamePedro
person.identifier.ciencia-idB112-8980-9E84
person.identifier.orcid0000-0001-8285-1084
person.identifier.orcid0000-0003-3495-4649
person.identifier.orcid0000-0001-6487-7950
person.identifier.orcid0000-0003-4842-8623
person.identifier.orcid0000-0001-5040-6170
person.identifier.orcid0000-0002-1989-3465
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication27861687-928c-4618-9f11-92d74ec326e0
relation.isAuthorOfPublicationb1e9a3af-258b-4e7c-9ea6-bb2f67e31bfd
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relation.isAuthorOfPublication581655ee-2021-42a9-aca2-e1f207cce842
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relation.isAuthorOfPublication.latestForDiscoveryaefa59ff-77f9-42ff-ac9b-88373f5c2ac8

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