Characterization and prediction of the clinical result with a specific model of mini-scleral contact lens in corneas with keratoconus
Abstract Background To investigate which factors are correlated with the visual improvement achieved with a specific model of scleral contact lens (SCL) in keratoconus (KC) eyes and to define a model to predict such improvement according to the pre-fitting data. In addition, the changes occurred wit...
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| Format: | Article |
| Language: | English |
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BMC
2022-10-01
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| Series: | Eye and Vision |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40662-022-00310-5 |
| _version_ | 1797996067576348672 |
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| author | Abdelkader Sidi Mohamed Hamida García-Barchín Marta Ruiz-Fortes Pedro David P. Piñero |
| author_facet | Abdelkader Sidi Mohamed Hamida García-Barchín Marta Ruiz-Fortes Pedro David P. Piñero |
| author_sort | Abdelkader Sidi Mohamed Hamida |
| collection | DOAJ |
| description | Abstract Background To investigate which factors are correlated with the visual improvement achieved with a specific model of scleral contact lens (SCL) in keratoconus (KC) eyes and to define a model to predict such improvement according to the pre-fitting data. In addition, the changes occurred with the fitting of a specific model of SCL during a period of 3 months in corneas with KC have been investigated. Methods Longitudinal retrospective study including 30 eyes of 18 patients (age, 14–65 years) with KC fitted with the SCL ICD16.50 (Paragon Vision Sciences). Visual, refractive, corneal tomographic and ocular aberrometric changes were evaluated during a 3-month follow-up. Likewise, the characterization of the post-lens meniscus was performed by optical coherence tomography (OCT) with the measurement of central, nasal and temporal vaults. Results The visual acuity increased significantly from a mean pre-fitting value with spectacles of 0.23 ± 0.07 logarithm of minimal angle of resolution (logMAR) to a mean value of 0.10 ± 0.04 logMAR after 1 month of SCL wear (P < 0.001). An improvement of 1 or more lines of visual acuity with the SCL occurred in 62.1% of the eyes. A significant decrease in central, nasal, and temporal vault was observed after 1 month of SCL wear (P ≤ 0.046). Likewise, there was a significant difference between nasal and temporal vaults during the first month of SCL use (P = 0.008). Furthermore, a significant reduction of ocular high order (P = 0.028) and primary coma root mean square (P = 0.018) was found with the SCL. A predicting linear equation of the change in visual acuity achievable with the SCL was obtained (P < 0.001, R2 = 0.878) considering the pre-fitting spectacle corrected distance visual acuity, and the power and sagittal lens of SCL. Conclusions The scleral contact lens evaluated provides an efficacious visual rehabilitation in KC due to the improvement of visual acuity and the correction of low and high-order ocular aberrations. This visual acuity improvement can be predicted from some pre-fitting variables. |
| first_indexed | 2024-04-11T10:10:24Z |
| format | Article |
| id | doaj.art-4b52fbef001d425a9cbe165049523e43 |
| institution | Directory Open Access Journal |
| issn | 2326-0254 |
| language | English |
| last_indexed | 2024-04-11T10:10:24Z |
| publishDate | 2022-10-01 |
| publisher | BMC |
| record_format | Article |
| series | Eye and Vision |
| spelling | doaj.art-4b52fbef001d425a9cbe165049523e432022-12-22T04:30:06ZengBMCEye and Vision2326-02542022-10-019111110.1186/s40662-022-00310-5Characterization and prediction of the clinical result with a specific model of mini-scleral contact lens in corneas with keratoconusAbdelkader Sidi Mohamed Hamida0García-Barchín Marta1Ruiz-Fortes Pedro2David P. Piñero3Department of Ophthalmology, Torrecárdenas Hospital ComplexGroup of Optics and Visual Perception, Department of Optics, Pharmacology, and Anatomy, University of AlicanteDepartment of Ophthalmology, Vithas Medimar International HospitalGroup of Optics and Visual Perception, Department of Optics, Pharmacology, and Anatomy, University of AlicanteAbstract Background To investigate which factors are correlated with the visual improvement achieved with a specific model of scleral contact lens (SCL) in keratoconus (KC) eyes and to define a model to predict such improvement according to the pre-fitting data. In addition, the changes occurred with the fitting of a specific model of SCL during a period of 3 months in corneas with KC have been investigated. Methods Longitudinal retrospective study including 30 eyes of 18 patients (age, 14–65 years) with KC fitted with the SCL ICD16.50 (Paragon Vision Sciences). Visual, refractive, corneal tomographic and ocular aberrometric changes were evaluated during a 3-month follow-up. Likewise, the characterization of the post-lens meniscus was performed by optical coherence tomography (OCT) with the measurement of central, nasal and temporal vaults. Results The visual acuity increased significantly from a mean pre-fitting value with spectacles of 0.23 ± 0.07 logarithm of minimal angle of resolution (logMAR) to a mean value of 0.10 ± 0.04 logMAR after 1 month of SCL wear (P < 0.001). An improvement of 1 or more lines of visual acuity with the SCL occurred in 62.1% of the eyes. A significant decrease in central, nasal, and temporal vault was observed after 1 month of SCL wear (P ≤ 0.046). Likewise, there was a significant difference between nasal and temporal vaults during the first month of SCL use (P = 0.008). Furthermore, a significant reduction of ocular high order (P = 0.028) and primary coma root mean square (P = 0.018) was found with the SCL. A predicting linear equation of the change in visual acuity achievable with the SCL was obtained (P < 0.001, R2 = 0.878) considering the pre-fitting spectacle corrected distance visual acuity, and the power and sagittal lens of SCL. Conclusions The scleral contact lens evaluated provides an efficacious visual rehabilitation in KC due to the improvement of visual acuity and the correction of low and high-order ocular aberrations. This visual acuity improvement can be predicted from some pre-fitting variables.https://doi.org/10.1186/s40662-022-00310-5KeratoconusCorneal ectasiaScleral contact lensMiniscleral contact lensAberrometryVisual acuity |
| spellingShingle | Abdelkader Sidi Mohamed Hamida García-Barchín Marta Ruiz-Fortes Pedro David P. Piñero Characterization and prediction of the clinical result with a specific model of mini-scleral contact lens in corneas with keratoconus Eye and Vision Keratoconus Corneal ectasia Scleral contact lens Miniscleral contact lens Aberrometry Visual acuity |
| title | Characterization and prediction of the clinical result with a specific model of mini-scleral contact lens in corneas with keratoconus |
| title_full | Characterization and prediction of the clinical result with a specific model of mini-scleral contact lens in corneas with keratoconus |
| title_fullStr | Characterization and prediction of the clinical result with a specific model of mini-scleral contact lens in corneas with keratoconus |
| title_full_unstemmed | Characterization and prediction of the clinical result with a specific model of mini-scleral contact lens in corneas with keratoconus |
| title_short | Characterization and prediction of the clinical result with a specific model of mini-scleral contact lens in corneas with keratoconus |
| title_sort | characterization and prediction of the clinical result with a specific model of mini scleral contact lens in corneas with keratoconus |
| topic | Keratoconus Corneal ectasia Scleral contact lens Miniscleral contact lens Aberrometry Visual acuity |
| url | https://doi.org/10.1186/s40662-022-00310-5 |
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