Scheimpflug imaging of the anterior segment following simultaneous cross-linking with topography-guided custom ablation treatment for keratoconus
| Autor: | Dorukcan Akincioglu, Gokhan Ozge, Gokcen Gokce, Onder Ayyildiz, Umut Karaca, Fatih Mehmet Mutlu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Anterior
Scheimpflug Photosensitizing Agents genetic structures Segmento anterior do olho Ultraviolet Rays Corneal Stroma Riboflavin Acuidade visual Corneal Topography RE1-994 Ceratocone Keratoconus eye diseases Ophthalmology Cross-Linking Reagents Photochemotherapy Humans Phototherapeutic Collagen Prospective Studies Photorefractive Reagentes para ligações cruzadas |
| Zdroj: | Arquivos Brasileiros de Oftalmologia v.85 n.2 2022 Arquivos brasileiros de oftalmologia Conselho Brasileiro de Oftalmologia (CBO) instacron:CBO Arquivos Brasileiros de Oftalmologia, Volume: 85, Issue: 2, Pages: 144-151, Published: 18 AUG 2021 Arquivos Brasileiros de Oftalmologia n.ahead 2021 Arquivos Brasileiros de Oftalmologia Arquivos Brasileiros de Oftalmologia (2021) Arquivos Brasileiros de Oftalmologia, Issue: ahead, Published: 18 AUG 2021 |
| Popis: | Purpose: To report alterations in the anterior segment following accelerated corneal collagen cross-linking and topo-guided customized ablation treatment with the Nidek vision excimer laser system (Nidek Co., Ltd., Gamagori, Japan) in a single procedure. Methods: We reviewed the medical records of patients who underwent cross-linking for progressive keratoconus. We divided patients into four groups based on the treatment protocol. Eyes were evaluated regarding uncorrected distance visual acuity, corrected distance visual acuity, keratometry (maximum [Kmax], equivalent keratometry readings, Ksteep and Kflat parameters), corneal elevations (anterior and posterior), the anterior radius of curvature, the posterior radius of curvature, anterior chamber volume, anterior chamber depth, anterior chamber angle and the pachymeter of the thinnest locale of the cornea before the surgery and at 1, 3, 6, and 12 months after the procedure. Results: We included 259 eyes of 227 patients with progressive keratoconus who underwent treatment. The mean respective baseline uncorrected distance visual acuity and corrected distance visual acuity were: 0.68 ± 0.45 and 0.34 ± 0.40 in Group 1; 0.82 ± 0.44 and 0.33 ± 0.23 in Group 2; 0.61 ± 0.36 and 0.21 ± 0.17 in Group 3; and 0.65 ± 0.38 and 0.23 ± 0.18 in Group 4; logMAR did not show significant difference among the groups (p=0.14 and p=0.06, respectively). Visual improvements were better in the combined surgery groups. Mean Kmax in Groups 1, 2, 3, and 4 were 57.24 ± 7.51, 59.26 ± 6.94, 53.73 ± 4.60, and 54.31 ± 4.25 diopter (D), respectively. Group 1 demonstrated increased Kmax for 6 months. Maximum flattening by 3.38 ± 2.35 D 1 year after surgery was observed in Group 4 (p |
| Databáze: | OpenAIRE |
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