دورية أكاديمية
أعرض في EDS

Intrastromal corneal ring segments: effect of depth of implantation in visual, refractive, and topographic outcomes in patients with keratoconus.

التفاصيل البيبلوغرافية
العنوان: Intrastromal corneal ring segments: effect of depth of implantation in visual, refractive, and topographic outcomes in patients with keratoconus.
المؤلفون: Neves Cruz C; From the Ophthalmology Department, Hospital de Braga, Braga, Portugal (Cruz, Franqueira, Mendes, Oliveira, Monteiro); Escola de Medicina da Universidade do Minho, Braga, Portugal (Monteiro)., Franqueira N, Mendes JC, Oliveira M, Monteiro T
المصدر: Journal of cataract and refractive surgery [J Cataract Refract Surg] 2023 Sep 01; Vol. 49 (9), pp. 949-955.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Wolters Kluwer on behalf of ASCRS and ESCRS Country of Publication: United States NLM ID: 8604171 Publication Model: Print Cited Medium: Internet ISSN: 1873-4502 (Electronic) Linking ISSN: 08863350 NLM ISO Abbreviation: J Cataract Refract Surg Subsets: MEDLINE
أسماء مطبوعة: Publication: 2020- : [Hagerstown, MD] : Wolters Kluwer on behalf of ASCRS and ESCRS
Original Publication: [Fairfax, Va.] : American Society of Cataract and Refractive Surgery, [c1986-
مواضيع طبية MeSH: Keratoconus*/surgery , Astigmatism*/surgery, Humans ; Retrospective Studies ; Corneal Stroma/surgery ; Corneal Topography ; Prosthesis Implantation/methods ; Refraction, Ocular ; Prostheses and Implants
مستخلص: Purpose: To evaluate visual, refractive, and topographic outcomes of intracorneal ring segment implantation in relation to the achieved segment depth, using the manual technique.
Setting: Ophthalmology Department, Hospital de Braga, Braga, Portugal.
Design: Retrospective cohort study.
Methods: We obtained 104 eyes of 93 patients with keratoconus submitted to Ferrara intracorneal ring segment (ICRS) implantation, using a manual technique. Subjects were divided into 3 groups according to the achieved depth of implantation: 40% to 70% (Group 1), 70% to 80% (Group 2), and 80% to 100% (Group 3). Visual, refractive, and topographic variables were evaluated at baseline and 6 months. Topographic measurement was performed using Pentacam. Thibos-Horner and Alpins methods were used to analyze the vectorial change of refractive and topographic astigmatism, respectively.
Results: We found a significant improvement of uncorrected distance visual acuity and corrected distance visual acuity in all groups at 6 months ( P < .005); no differences were observed regarding safety and efficacy indexes in the 3 groups ( P > .05). Manifest cylinder and spherical equivalent significantly reduced in all groups ( P < .05). Topographic evaluation showed a significant improvement of all parameters in the 3 groups ( P < .05). A shallower (Group 1) or deeper (Group 3) implantation was associated with topographic cylinder overcorrection, a higher magnitude of error, and a higher mean centroid postoperative corneal astigmatism.
Conclusions: ICRS implantation with the manual technique showed to be equally effective in visual and refractive outcomes despite the depth of implantation; however, shallower or deeper implants were associated with topographic overcorrection and a higher mean centroid postoperative astigmatism, which explain the lower topographic predictability associated with manual surgery for ICRS implantation.
(Copyright © 2023 Published by Wolters Kluwer on behalf of ASCRS and ESCRS.)
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تواريخ الأحداث: Date Created: 20230628 Date Completed: 20230829 Latest Revision: 20230830
رمز التحديث: 20240628
DOI: 10.1097/j.jcrs.0000000000001249
PMID: 37379026
قاعدة البيانات: MEDLINE
الوصف
تدمد:1873-4502
DOI:10.1097/j.jcrs.0000000000001249