| Título: | Long-Term Follow-Up of Intrastromal Corneal Ring Segments in Paracentral Keratoconus with Coincident Corneal Keratometric, Comatic, and Refractive Axes: Stability of the Procedure |
| Autores: | Fernández-Vega Cueto, Luis ; Lisa Fernández, Carlos ; Madrid Costa, David ; Merayo Lloves, Jesús Manuel ; Alfonso, José F. |
| Tipo de documento: | texto impreso |
| Editorial: | Hindawi Publishing Corporation, 2017-11 |
| Dimensiones: | application/pdf |
| Nota general: |
cc_by info:eu-repo/semantics/openAccess |
| Idiomas: | |
| Palabras clave: | Estado = Publicado , Materia = Ciencias Biomédicas: Medicina: Cirugía , Materia = Ciencias Biomédicas: Medicina: Oftalmología , Materia = Ciencias Biomédicas: Óptica y optometría: Óptica oftálmica , Tipo = Artículo |
| Resumen: |
Purpose: To assess the long-term outcomes of implanting intrastromal corneal ring segments (ICRSs) to correct central keratoconus with a high corneal asphericity value. Methods: Forty-three eyes with central keratoconus with a corneal asphericity value ?-1.00 were evaluated before and after implanting an inferior 210-degree arc-length Ferrara-type AFR5 ICRS (AJL Ophthalmic, Spain). Logarithm of the minimum angle of resolution uncorrected (UDVA) and best-corrected (CDVA) distance visual acuity, corneal asphericity, root mean square for coma-like aberrations [computed for the Zernike terms Z (3, 1) and Z (3, -1)], and residual refractive errors analyzed using vector analysis were recorded before and at all follow-up visits. The postoperative follow-up duration was 3 years in all cases. Result: Mean UDVA (logarithm of the minimum angle of resolution scale) rose from 1.18 ± 0.59 to a postoperative 0.53 ± 0.39 after ICRS implantation (P 0.05). The spherical equivalent declined steeply after ICRS implantation (P 0.05). Conclusions: These results suggest that implanting a single, inferior, 210-degree arc-length Ferrara-type ICRS is a safe, effective, and stable procedure for treating patients with central hyperprolate keratoconus. |
| En línea: | https://eprints.ucm.es/46391/1/Madrid_Long%20term-Hindawi-2017.pdf |
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