Vinciguerra, Riccardo, Cancian, Giuseppe, Ambrósio, Renato, Elsheikh, Ahmed ORCID: 0000-0001-7456-1749, Eliasy, Ashkan, Lopes, Bernardo and Vinciguerra, Paolo
(2023)
Assessment of the specificity of corvis biomechanical index-laser vision correction (CBI-LVC) in stable corneas after phototherapeutic keratectomy.
International ophthalmology, 43 (11).
pp. 4289-4295.
Text
Riccardo - Assessment of CBI-LVC 2023.docx - Author Accepted Manuscript Access to this file is embargoed until 29 August 2024. Download (142kB) |
Abstract
<h4>Purpose</h4>The Corvis Biomechanical Index-Laser Vision Correction (CBI-LVC) is a biomechanical index to detect ectasia in post-refractive surgery patients (PRK, LASIK, SMILE). This study aims to evaluate the distribution of the CBI-LVC in stable patients who underwent Phototherapeutic Keratectomy (PTK) compared to PRK patients.<h4>Methods</h4>Patients who underwent PRK and PTK performed between 2000 and 2018 in Humanitas Research Hospital, Rozzano, Milan, Italy and remained stable for at least four years post-surgery were included. All eyes were examined with the Corvis ST (Oculus, Germany), whose output allows the calculation of the CBI-LVC. The distribution and specificity of the CBI-LVC in the two populations were estimated using a Wilcoxon Mann-Whitney test and compared.<h4>Results</h4>175 eyes of 148 patients were included (85 eyes of 50 PTK patients and 90 eyes of 90 PRK patients). The distribution of CBI-LVC in the two groups showed a minor difference, with a median value in PRK patients of 0.000 (95% CI 0.000; 0.002) and 0.008 (95% CI 0.000; 0.037) in PTK patients (Mann-Whitney U test p = 0.023). The statistical analysis showed that the CBI-LVC provided a specificity of 92.22% in the PRK group, while in the PTK group it was 82.35%. Nevertheless, this difference was not statistically significant (Chi-squared test with Yates, p = 0.080).<h4>Conclusion</h4>CBI-LVC provided similar specificity in stable PTK patients compared to those who underwent PRK. These results suggest that the CBI-LVC could be a useful tool to aid corneal surgeons in managing PTK patients.
Item Type: | Article |
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Uncontrolled Keywords: | Cornea, Humans, Keratomileusis, Laser In Situ, Lasers, Photorefractive Keratectomy, Surgeons |
Divisions: | Faculty of Science and Engineering > School of Engineering |
Depositing User: | Symplectic Admin |
Date Deposited: | 04 Sep 2023 08:00 |
Last Modified: | 29 Sep 2023 08:27 |
DOI: | 10.1007/s10792-023-02840-w |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3172508 |