Clinical Outcomes of Sequential Intrastromal Corneal Ring Segments and an Extended Range of Vision Intraocular Lens Implantation in Patients with Keratoconus and Cataract
Purpose. To evaluate efficacy, safety, and predictability of sequential Ferrara-type intrastromal corneal ring segments (ICRS) and an extended range of vision intraocular lens (IOL) implantation in patients with keratoconus and cataract. Methods. This study comprised patients with keratoconus and ca...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Journal of Ophthalmology |
| Online Access: | http://dx.doi.org/10.1155/2018/8328134 |
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| author | C. Lisa R. Zaldivar A. Fernández-Vega Cueto R. M. Sanchez-Avila D. Madrid-Costa J. F. Alfonso |
| author_facet | C. Lisa R. Zaldivar A. Fernández-Vega Cueto R. M. Sanchez-Avila D. Madrid-Costa J. F. Alfonso |
| author_sort | C. Lisa |
| collection | DOAJ |
| description | Purpose. To evaluate efficacy, safety, and predictability of sequential Ferrara-type intrastromal corneal ring segments (ICRS) and an extended range of vision intraocular lens (IOL) implantation in patients with keratoconus and cataract. Methods. This study comprised patients with keratoconus and cataract that had ICRS implantation followed 6 months later by extended range of vision IOL implantation. The uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), and residual refractive errors, analysed using vector analysis, were recorded preoperatively, 6 months after ICRS implantation, and 6 months after IOL implantation, respectively. Results. The study enrolled 17 eyes (11 patients). The mean UDVA (logMAR scale) was 1.15 ± 0.67 preoperatively, 0.88 ± 0.69 six months after ICRS implantation (P=0.005), and 0.27 ± 0.18 six months after IOL implantation (P<0.0001). The CDVA changed from 0.26 ± 0.15 (logMAR) before surgery to 0.17 ± 0.08 six months after Ferrara-type ICRS implantation (P=0.002) and to 0.07 ± 0.06 six months after IOL implantation (P<0.0001). The spherical equivalent and the refractive cylinder declined steeply after IOL implantation (P<0.001). The magnitude of depth of focus was 2.60 ± 1.02 D. There were no statistically significant differences in visual acuity for a defocus range from +0.50 D to −0.50 D (P>0.1). Conclusion. Sequential Ferrara-type ICRS and an extended range of vision IOL implantation provided good visual and refractive outcomes, being an effective, safe, and predictable procedure for the treatment of selected cases of patients with keratoconus and cataract. In addition, this approach provides an increase of tolerance to defocus. |
| format | Article |
| id | doaj-art-645a9e36fd0f4297a3f2b3ff8c9481e6 |
| institution | Kabale University |
| issn | 2090-004X 2090-0058 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Ophthalmology |
| spelling | doaj-art-645a9e36fd0f4297a3f2b3ff8c9481e62025-02-03T05:59:06ZengWileyJournal of Ophthalmology2090-004X2090-00582018-01-01201810.1155/2018/83281348328134Clinical Outcomes of Sequential Intrastromal Corneal Ring Segments and an Extended Range of Vision Intraocular Lens Implantation in Patients with Keratoconus and CataractC. Lisa0R. Zaldivar1A. Fernández-Vega Cueto2R. M. Sanchez-Avila3D. Madrid-Costa4J. F. Alfonso5Fernández-Vega Ophthalmological Institute, Oviedo, SpainInstituto Zaldivar, Mendoza, ArgentinaCentro de Oftalmología Barraquer, Barcelona, SpainFernández-Vega Ophthalmological Institute, Oviedo, SpainOptics II Department, Faculty of Optics and Optometry, Universidad Complutense de Madrid, Madrid, SpainFernández-Vega Ophthalmological Institute, Oviedo, SpainPurpose. To evaluate efficacy, safety, and predictability of sequential Ferrara-type intrastromal corneal ring segments (ICRS) and an extended range of vision intraocular lens (IOL) implantation in patients with keratoconus and cataract. Methods. This study comprised patients with keratoconus and cataract that had ICRS implantation followed 6 months later by extended range of vision IOL implantation. The uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), and residual refractive errors, analysed using vector analysis, were recorded preoperatively, 6 months after ICRS implantation, and 6 months after IOL implantation, respectively. Results. The study enrolled 17 eyes (11 patients). The mean UDVA (logMAR scale) was 1.15 ± 0.67 preoperatively, 0.88 ± 0.69 six months after ICRS implantation (P=0.005), and 0.27 ± 0.18 six months after IOL implantation (P<0.0001). The CDVA changed from 0.26 ± 0.15 (logMAR) before surgery to 0.17 ± 0.08 six months after Ferrara-type ICRS implantation (P=0.002) and to 0.07 ± 0.06 six months after IOL implantation (P<0.0001). The spherical equivalent and the refractive cylinder declined steeply after IOL implantation (P<0.001). The magnitude of depth of focus was 2.60 ± 1.02 D. There were no statistically significant differences in visual acuity for a defocus range from +0.50 D to −0.50 D (P>0.1). Conclusion. Sequential Ferrara-type ICRS and an extended range of vision IOL implantation provided good visual and refractive outcomes, being an effective, safe, and predictable procedure for the treatment of selected cases of patients with keratoconus and cataract. In addition, this approach provides an increase of tolerance to defocus.http://dx.doi.org/10.1155/2018/8328134 |
| spellingShingle | C. Lisa R. Zaldivar A. Fernández-Vega Cueto R. M. Sanchez-Avila D. Madrid-Costa J. F. Alfonso Clinical Outcomes of Sequential Intrastromal Corneal Ring Segments and an Extended Range of Vision Intraocular Lens Implantation in Patients with Keratoconus and Cataract Journal of Ophthalmology |
| title | Clinical Outcomes of Sequential Intrastromal Corneal Ring Segments and an Extended Range of Vision Intraocular Lens Implantation in Patients with Keratoconus and Cataract |
| title_full | Clinical Outcomes of Sequential Intrastromal Corneal Ring Segments and an Extended Range of Vision Intraocular Lens Implantation in Patients with Keratoconus and Cataract |
| title_fullStr | Clinical Outcomes of Sequential Intrastromal Corneal Ring Segments and an Extended Range of Vision Intraocular Lens Implantation in Patients with Keratoconus and Cataract |
| title_full_unstemmed | Clinical Outcomes of Sequential Intrastromal Corneal Ring Segments and an Extended Range of Vision Intraocular Lens Implantation in Patients with Keratoconus and Cataract |
| title_short | Clinical Outcomes of Sequential Intrastromal Corneal Ring Segments and an Extended Range of Vision Intraocular Lens Implantation in Patients with Keratoconus and Cataract |
| title_sort | clinical outcomes of sequential intrastromal corneal ring segments and an extended range of vision intraocular lens implantation in patients with keratoconus and cataract |
| url | http://dx.doi.org/10.1155/2018/8328134 |
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