Modification of the Intrastromal Ring Position according to Postimplant Visual and Refractive Failure: Report of Two Cases
Objective. The following report presents the adaptation of an existing technique of intrastromal corneal ring (ICRS) implantation enabling repositioning of the ring position postoperatively to manage a refractive failure in two patients with keratoconus. Methods. In two cases, KeraRing and Ferrara n...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
|
| Series: | Case Reports in Ophthalmological Medicine |
| Online Access: | http://dx.doi.org/10.1155/2019/7151849 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832563715485990912 |
|---|---|
| author | Luis Izquierdo Josefina A. Mejías Smith Jose R. Lievano Ramón Sarquis Maria A. Henriquez |
| author_facet | Luis Izquierdo Josefina A. Mejías Smith Jose R. Lievano Ramón Sarquis Maria A. Henriquez |
| author_sort | Luis Izquierdo |
| collection | DOAJ |
| description | Objective. The following report presents the adaptation of an existing technique of intrastromal corneal ring (ICRS) implantation enabling repositioning of the ring position postoperatively to manage a refractive failure in two patients with keratoconus. Methods. In two cases, KeraRing and Ferrara nomograms had suggested different ring positions. To manage with the differences between the two nomograms, a longer corneal tunnel was created followed by the classic intervention to move the ring through the initial intrastromal corneal tunnel according to the topographic values. Once the first ring position has failed, the ring segment was repositioned along the longer corneal tunnel according to the postoperative outcome. Results. Significant improvement in both cases was observed in the best corrected visual acuity (BCVA), uncorrected visual acuity (UCVA), and root mean square (RMS) measured with Scheimpflug imaging (Pentacam; Oculus GmBH, Wetzlar, Germany). The participants were followed for one year. Conclusion. In patients with keratoconus which exhibit significant differences between KeraRing and Ferrara nomograms, a longer tunnel should be created to enable repositioning of the ring postoperatively if necessary, to avoid extracting the ring or changing it. |
| format | Article |
| id | doaj-art-89f52cc055b342d092c4b212e074b75b |
| institution | Kabale University |
| issn | 2090-6722 2090-6730 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Case Reports in Ophthalmological Medicine |
| spelling | doaj-art-89f52cc055b342d092c4b212e074b75b2025-02-03T01:12:51ZengWileyCase Reports in Ophthalmological Medicine2090-67222090-67302019-01-01201910.1155/2019/71518497151849Modification of the Intrastromal Ring Position according to Postimplant Visual and Refractive Failure: Report of Two CasesLuis Izquierdo0Josefina A. Mejías Smith1Jose R. Lievano2Ramón Sarquis3Maria A. Henriquez4Head of Department of Cornea and Anterior Segment, Instituto de Ojos Oftalmosalud, Lima, PeruResearch Department, Instituto de Ojos Oftalmosalud, Lima, PeruResearch Department, Instituto de Ojos Oftalmosalud, Lima, PeruResearch Department, Instituto de Ojos Oftalmosalud, Lima, PeruHead of Research Department, Instituto de Ojos Oftalmosalud, Av. Javier Prado Este 1142, San Isidro, Lima, PeruObjective. The following report presents the adaptation of an existing technique of intrastromal corneal ring (ICRS) implantation enabling repositioning of the ring position postoperatively to manage a refractive failure in two patients with keratoconus. Methods. In two cases, KeraRing and Ferrara nomograms had suggested different ring positions. To manage with the differences between the two nomograms, a longer corneal tunnel was created followed by the classic intervention to move the ring through the initial intrastromal corneal tunnel according to the topographic values. Once the first ring position has failed, the ring segment was repositioned along the longer corneal tunnel according to the postoperative outcome. Results. Significant improvement in both cases was observed in the best corrected visual acuity (BCVA), uncorrected visual acuity (UCVA), and root mean square (RMS) measured with Scheimpflug imaging (Pentacam; Oculus GmBH, Wetzlar, Germany). The participants were followed for one year. Conclusion. In patients with keratoconus which exhibit significant differences between KeraRing and Ferrara nomograms, a longer tunnel should be created to enable repositioning of the ring postoperatively if necessary, to avoid extracting the ring or changing it.http://dx.doi.org/10.1155/2019/7151849 |
| spellingShingle | Luis Izquierdo Josefina A. Mejías Smith Jose R. Lievano Ramón Sarquis Maria A. Henriquez Modification of the Intrastromal Ring Position according to Postimplant Visual and Refractive Failure: Report of Two Cases Case Reports in Ophthalmological Medicine |
| title | Modification of the Intrastromal Ring Position according to Postimplant Visual and Refractive Failure: Report of Two Cases |
| title_full | Modification of the Intrastromal Ring Position according to Postimplant Visual and Refractive Failure: Report of Two Cases |
| title_fullStr | Modification of the Intrastromal Ring Position according to Postimplant Visual and Refractive Failure: Report of Two Cases |
| title_full_unstemmed | Modification of the Intrastromal Ring Position according to Postimplant Visual and Refractive Failure: Report of Two Cases |
| title_short | Modification of the Intrastromal Ring Position according to Postimplant Visual and Refractive Failure: Report of Two Cases |
| title_sort | modification of the intrastromal ring position according to postimplant visual and refractive failure report of two cases |
| url | http://dx.doi.org/10.1155/2019/7151849 |
| work_keys_str_mv | AT luisizquierdo modificationoftheintrastromalringpositionaccordingtopostimplantvisualandrefractivefailurereportoftwocases AT josefinaamejiassmith modificationoftheintrastromalringpositionaccordingtopostimplantvisualandrefractivefailurereportoftwocases AT joserlievano modificationoftheintrastromalringpositionaccordingtopostimplantvisualandrefractivefailurereportoftwocases AT ramonsarquis modificationoftheintrastromalringpositionaccordingtopostimplantvisualandrefractivefailurereportoftwocases AT mariaahenriquez modificationoftheintrastromalringpositionaccordingtopostimplantvisualandrefractivefailurereportoftwocases |