International Journal of Keratoconus and Ectatic Corneal Diseases

Register      Login

Table of Content

2013 | January-April | Volume 2 | Issue 1

RESEARCH ARTICLE

Joseph Colin ‘in memoriam’

[Year:2013] [Month:January-April] [Volume:2] [Number:1] [Pages:1] [Pages No:0 - 0]

PDF  |  DOI: 10.5005/ijkecd-2-1-iv  |  Open Access |  How to cite  | 

RESEARCH ARTICLE

Ariela Gordon-Shaag, Philip Fine, Esther Leibowitz, Ayelet Chen Lahav, Steven Jackson, Renana Halperin, Gantz Liat

A Prospective Clinical Evaluation of a New Scleral Contact Lens for Patients with Distorted Corneas

[Year:2013] [Month:January-April] [Volume:2] [Number:1] [Pages:11] [Pages No:1 - 11]

PDF  |  DOI: 10.5005/jp-journals-10025-1040  |  Open Access |  How to cite  | 

RESEARCH ARTICLE

Leonardo Torquetti, Wagner Gomes Dias

The Influence of Corneal Volume in Surgical Planning: Insights for a New Parameter for the Ferrara Ring Nomogram

[Year:2013] [Month:January-April] [Volume:2] [Number:1] [Pages:4] [Pages No:12 - 15]

PDF  |  DOI: 10.5005/jp-journals-10025-1041  |  Open Access |  How to cite  | 

Abstract

Purpose

To evaluate the corneal volume (CV) before and after Ferrara intrastromal corneal ring segments (ICRS) implantation and its influence in clinical outcomes in keratoconus patients.

Materials and methods

A total of 77 eyes of 42 keratoconus patients consecutively implanted with the Ferrara ICRS were evaluated with a Pentacam (Oculus Optikgerate GmbH). The following parameters were obtained: Anterior corneal asphericity (Q), CV and thinnest corneal thickness (TCT). The inter-relation between Q and CV was evaluated.

Results

In patients with CV inside two standard deviation (SD: 53.51-60.65) of the mean CV, the postoperative asphericity values roughly agreed with expected asphericity values. In patients with CV outside two SD intervals (<53.51 and >60.65) of the mean CV, the postoperative asphericity values did not agreed with expected asphericity values. Corneas with high volumes (>60.65) had less change of asphericity than corneas with low volumes.

Conclusion

The CV is a new parameter, to be better studied, as it seems to be important in ICRS selection. Corneas with high volumes may require more tissue to get flattened and properly reshaped.

How to cite this article

Torquetti L, Ferrara G, Dias WG, Ferrara P. The Influence of Corneal Volume in Surgical Planning: Insights for a New Parameter for the Ferrara Ring Nomogram. Int J Kerat Ect Cor Dis 2013;2(1):12-15.

RESEARCH ARTICLE

Vinay Agrawal

Outcomes of Corneal Collagen Cross-linking for Keratoconus the Effect of Cone Location

[Year:2013] [Month:January-April] [Volume:2] [Number:1] [Pages:4] [Pages No:16 - 19]

PDF  |  DOI: 10.5005/jp-journals-10025-1042  |  Open Access |  How to cite  | 

Abstract

Aim

One-year outcome of corneal collagen cross-linking (CXL) for keratoconus with reference to topographic cone location.

Materials and methods

Clinical audit of the results of CXL were used. Three hundred and seventy-eight eyes of 225 patients with preoperative and 12-month completed follow-up were included. Cone location was defined by cone location magnitude index (CLMI) using the Keratron scout topography system. The eyes were divided into two groups–central with cone location within 3 mm zone of the topography map and paracentral with cone location between the 3 and 5 mm zones.

Results

The overall group showed a mean flattening of the CLMI of 1.67 D [preoperative 53.35 ± 5.63 D, 12 months 51.69 ± 4.67 (p = 0.095)]. The flattening in central cone group was 2.67 D [preoperative 54.01 ± 5.3819, at 12 months to 51.341 ± 4.588 (p = 0.016)]. In paracentral cone group the flattening was lesser at 1.73 D [preoperative apex K 52.805 ± 6.382, at 12 months 51.03 ± 4.82 (p = 0.006)]. The difference between groups was statistically significant (p < 0.001). The central cone group showed no significant shift in cone position [preoperative 1.0059 ± 0.24, at 12 months 0.986 ± 0.206 (p = 0.45)]. The paracentral cone group showed a significant mean shift of 1.05 mm in cone location [preoperative 2.224 ± 0.440, at 12 months 1.196 ± 0.529 (p = 0.001)].

Conclusion

Cone location has an impact on the results of corneal cross-linking. The paracentral cones show a significant shift toward the center of the cornea and the central cones show a larger flattening.

How to cite this article

Agrawal V. Outcomes of Corneal Collagen Cross-linking for Keratoconus the Effect of Cone Location. Int J Kerat Ect Cor Dis 2013;2(1):16-19.

RESEARCH ARTICLE

Isaac Ramos, Paulo Schor, Allan Luz, Luciene Babosa, Bruno Machado Fontes

Deep Anterior Lamellar Keratoplasty for Ectatic Disease

[Year:2013] [Month:January-April] [Volume:2] [Number:1] [Pages:8] [Pages No:20 - 27]

PDF  |  DOI: 10.5005/jp-journals-10025-1043  |  Open Access |  How to cite  | 

Abstract

How to cite this article

Luz A, Babosa L, Fontes BM, Ramos I, Schor P, Ambrósio R Jr. Deep Anterior Lamellar Keratoplasty for Ectatic Disease. Int J Kerat Ect Cor Dis 2013;2(1):20-27.

RESEARCH ARTICLE

Ilya Ortenberg, Shmuel Behrman

The Role of Scleral Lens in Ectatic Corneas

[Year:2013] [Month:January-April] [Volume:2] [Number:1] [Pages:3] [Pages No:28 - 30]

PDF  |  DOI: 10.5005/jp-journals-10025-1044  |  Open Access |  How to cite  | 

Abstract

How to cite this article

Ortenberg I, Behrman S. The Role of Scleral Lens in Ectatic Corneas. Int J Kerat Ect Cor Dis 2013;2(1):28-30.

RESEARCH ARTICLE

Ilya Ortenberg, Shmuel Behrman

The Role of Scleral Lens in Ectatic Corneas

[Year:2013] [Month:January-April] [Volume:2] [Number:1] [Pages:3] [Pages No:31 - 33]

PDF  |  DOI: 10.5005/jp-journals-10025-1045  |  Open Access |  How to cite  | 

Abstract

How to cite this article

Ortenberg I, Behrman S. The Role of Scleral Lens in Ectatic Corneas. Int J Kerat Ect Cor Dis 2013;2(1):28-30.

RESEARCH ARTICLE

Ramez Barbara, Lamis Abdelaziz

History of the Development of the Treatment of Keratoconus

[Year:2013] [Month:January-April] [Volume:2] [Number:1] [Pages:6] [Pages No:34 - 39]

PDF  |  DOI: 10.5005/jp-journals-10025-1046  |  Open Access |  How to cite  | 

Abstract

How to cite this article

Abdelaziz L, Barbara R. History of the Development of the Treatment of Keratoconus. Int J Kerat Ect Cor Dis 2013;2(1):31-33.

RESEARCH ARTICLE

E Levinger, S Levinger, A Hirsh

Explantation and Rotation of Intracorneal Ring Segments with the Support of Femtosecond Laser: An Asymmetrical Version

[Year:2013] [Month:January-April] [Volume:2] [Number:1] [Pages:3] [Pages No:40 - 42]

PDF  |  DOI: 10.5005/jp-journals-10025-1047  |  Open Access |  How to cite  | 

Abstract

Purpose

To report a 25-year-old man who presented with advance keratoconus in the right eye with uncorrected visual acuity (UCVA) of 0.2 and best spectacle-corrected visual acuity (BSCVA) of 0.33 with +0.50 −9.25 × 45°.

Materials and methods

Clinical examination and corneal topography revealed grade III keratoconus in the right eye. Intracorneal ring segments (INTACS SK; Addition Technology, Des Plaines, IL) were implanted without surgical complications at 400 µm, with the 450 µm segments implanted superiorly and inferiorly using the femtosecond laser (Intralase®, Advanced Medical Optics, Inc, Abbott Park, IL).

Results

For 3 months postoperatively, BSCVA remained at 0.5 with plano −4.50 × 25°. The patient was complaining of foreign body sensation in the upper part of the eye and glare asking the surgeon to remove the two segments. The superior segment was removed and the lower segment was rotated 30° counter clockwise. Three months later, UCVA was 0.67 and remained stable for 24 months of follow-up.

Conclusion

This report shows that implanting the thicker segment inferiorly provides better visual results.

How to cite this article

Levinger E, Levinger S, Hirsh A. Explantation and Rotation of Intracorneal Ring Segments with the Support of Femtosecond Laser: An Asymmetrical Version. Int J Kerat Ect Cor Dis 2013;2(1):40-42.

RESEARCH ARTICLE

Cristiana Valente, Agostino Salvatore Vaiano, Giacomo De Benedetti, Rosanna Perno, Gaudioso del Monte, Guido Caramello

Spontaneous Corneal Rupture One Week after Intrastromal Ring Segment Surgery

[Year:2013] [Month:January-April] [Volume:2] [Number:1] [Pages:4] [Pages No:43 - 46]

PDF  |  DOI: 10.5005/jp-journals-10025-1048  |  Open Access |  How to cite  | 

Abstract

Purpose

To report a case of spontaneous (nontraumatic) rupture of the cornea 7 days after intrastromal ring segment surgery in a patient with pellucid marginal degeneration (PMD).

Methods

Case report.

Results

A 37-year-old African woman complains blurred vision, photophobia, foreign body sensation and redness in her left eye 7 days after an uneventful implantation of a Ferrara intrastromal corneal ring segment (ICRS) for PMD. Left eye examination revealed the rupture in the thinnest point of the cornea between the limbus and the implanted lower ICRS, and the iris prolapsed through the wound.

Conclusion

To the best of our knowledge, this case is the first documented spontaneous rupture of the thinnest point of the cornea in a patient with PMD treated successfully with the ICRS procedure. We examined the causes of this early and dramatic evolution and emphasize the importance of a careful follow-up.

How to cite this article

Vaiano AS, De Benedetti G, Perno R, del Monte G, Valente C, Caramello G. Spontaneous Corneal Rupture One Week after Intrastromal Ring Segment Surgery. Int J Kerat Ect Cor Dis 2013;2(1):43-46.

© Jaypee Brothers Medical Publishers (P) LTD.