Objective: To define predictive factors after manual implantation of intrastromal corneal ring segments (Ferrara ring) for the management of keratoconus.
Patients And Methods: Twenty-five eyes of 25 patients with keratoconus were implanted with Ferrara intracorneal ring segments using a mechanical procedure. We measured corneal ring implantation depth, best spectacle-corrected visual acuity (BSCVA), as well as refractive and keratometric outcomes. Patients were separated into two groups according to the gain of at least two lines of BSCVA ("good response") or the gain of only one line of BSCVA, no change, or the loss of lines of BSCVA ("poor response").
Results: After a 6-month follow-up, 41% patients experienced a gain of at least two lines of BSCVA, 31.8% a gain of only one line, 13.6% no change, and 13.6% a loss of BSCVA. The sphere reduced from 4.39 to 2.34D (p<0.01), the cylinder from 4.19 to 2.77D (p<0.01), and the mean keratometry from 51.44 to 48.74D (p<0.02). As successful predictive factors, we found the asymmetry of keratoconus (p<0.01) in relation to the steepest meridian and patients implanted with a single ring (p<0.02).
Conclusion: Defining preoperative successful predictive factors for Ferrara intracorneal ring segments is essential to enhance postoperative outcomes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jfo.2011.02.006 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Femtosecond Laser- Assisted Customized CAIRS In Keratoconus Patients After ICRS Explantation: A Prospective Case Series: Customized CAIRS in post ICRS extrusion keratoconus patients.
J Cataract Refract Surg
December 2024
Department of Ophthalmology, Sorocaba Eye Hospital, Sorocaba Eye Bank, Sorocaba, São Paulo, Brazil.
Purpose: To investigate the effectiveness and safety of customized femtosecond laser-assisted corneal allogenic intrastromal ring segments (CAIRS) implantation in keratoconus patients with a history of intrastromal corneal ring segment (ICRS) explantation.
Setting: Sorocaba Eye Hospital (Hospital Oftalmológico de Sorocaba - HOS), Sorocaba, Brazil.
Design: Prospective case series.
Vector Analysis and Prognostic Factors for Femtosecond Arcuate Keratotomy in Post-Keratoplasty Astigmatism.
Clin Ophthalmol
December 2023
Ophthalmology, Dhahran Eye Specialist Hospital, Dhahran, Saudi Arabia.
Purpose: To analyze different tomographic and refractive parameters for predicting successful visual outcome following femtosecond laser-assisted arcuate keratotomy (FSAK) for post-keratoplasty astigmatism.
Design: Retrospective.
Methods: Retrospective study evaluating patients with astigmatism following penetrating keratoplasty (PKP) or deep anterior lamellar keratoplasty (DALK) who underwent FSAK.
Progressive high-fluence epithelium-on accelerated corneal crosslinking: a novel corneal photodynamic therapy for early progressive keratoconus.
Front Med (Lausanne)
August 2023
Studio Oculistico Ferrise, Lamezia Terme, Italy.
Purpose: To assess the preliminary clinical results of a new, progressively higher fluence-pulsed light Epi-On accelerated crosslinking nomogram (PFPL M Epi-On ACXL) in the treatment of progressive keratoconus (KC).
Setting: Siena Crosslinking Center, Siena, Italy.
Methods: A prospective pilot open, non-randomized interventional study, including 32 eyes of 32 young-adult patients over 26 years old with Stages I-III progressive KC undergoing PFPL M Epi-On ACXL, was conducted.
Long-Term Outcomes After Corneal Cross-linking for Progressive Keratoconus and Corneal Ectasia: A 10-Year Follow-Up of the Pivotal Study.
Eye Contact Lens
October 2023
Cornea and Laser Eye Institute (S.A.G., A.S.Y., J.D.G., S.H., P.S.H.); CLEI Center for Keratoconus, Teaneck, NJ; and Department of Ophthalmology (S.A.G., J.D.G., P.S.H.), Rutgers New Jersey Medical School, Newark, NJ.
Objectives: To report on the topographic and visual outcomes 10 years after corneal cross-linking in patients with progressive keratoconus and corneal ectasia after refractive surgery.
Methods: Cross-sectional cohort study of an original, prospective, randomized, clinical trial. Patients treated in a single center cornea and refractive surgery practice as part of the U.
Efficacy and safety of single-step transepithelial photorefractive keratectomy with the all-surface laser ablation SCHWIND platform without mitomycin-C for high myopia: A retrospective study of 69 eyes.
PLoS One
January 2022
Department of Ophthalmology, Metz-Thionville Regional Hospital Center, University of Lorraine, Mercy Hospital, Metz, France.
Article Synopsis
- A study investigated the safety and effectiveness of transepithelial photorefractive keratectomy (TransPRK) for high myopia, specifically using the ASLA-SCHWIND laser system without the typical use of mitomycin-C to prevent corneal haze.
- Results from 69 eyes showed a significant improvement in uncorrected and best spectacle-corrected visual acuity after surgery, with high efficacy (95.7%) and safety rates (95.7%), and minimal haze complications (none at grades 3-4).
- The findings suggest that performing TransPRK without mitomycin-C may be a viable option for treating high myopia, demonstrating good visual outcomes and predictability.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!