Academic Journal
Corneal densitometry changes after femtosecond laser-assisted intracorneal ring segments implantation in keratoconus
| العنوان: | Corneal densitometry changes after femtosecond laser-assisted intracorneal ring segments implantation in keratoconus |
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| المؤلفون: | Mounir, Amr, Mohamed Mostafa, Engy, Amer, Ibrahim, Abdelaleem Abdelgbar, Ahmed, Osman Osman, Hamdy, Abdelrahman Ahmed, Mostafa, Ziada, Hossam, Ali El Gabbar, Abdel Ghany, Alsadawy Hassan, Mohamed, Mahmoud, Alaa |
| المصدر: | Medical hypothesis discovery and innovation in ophthalmology; Vol. 13 No. 1 (2024): Spring 2024; 27-34 ; 2322-3219 |
| بيانات النشر: | IVORC |
| سنة النشر: | 2024 |
| الوصف: | Background: Intrastromal corneal ring segments are commonly implanted in the corneas of eyes with mild-to-moderate keratoconus; however, changes in corneal densitometry (CD) after implantation are a matter of debate in the current literature. We evaluated the changes in CD 1 and 3 months after femtosecond laser-assisted Keraring implantation. Methods: This retrospective, non-comparative, multicenter, case series study included patients with keratoconus who underwent femtosecond laser-assisted implantation of double segments with 90° and 160° arc lengths or two 160° arc length Keraring segments. Demographic and baseline clinical ophthalmic data were recorded. Corneal topography and tomography data acquired using a Pentacam HR Scheimpflug tomography system (Pentacam High Resolution; Oculus, Wetzlar, Germany) with a best-fit sphere were used as a reference surface. Using the Pentacam HR, CD measurements were acquired over a corneal area of 12 mm in total and at four concentric zones (0–2, 2–6, 6–10, and 10–12 mm) of three corneal stromal depths: 120 micrometers of the anterior corneal stromal layer, 60 micrometers of the posterior corneal stromal layer, and the central layer of stroma lying between these two layers. Results: We included 40 eyes of 40 patients, including 8 (20%) male and 32 (80%) female individuals, with a mean (standard deviation) age of 21.0 (6.4) years. We observed a significant improvement in the topographic values of steep keratometry (K), flat K, maximum K, and corneal astigmatism (all P < 0.05), but not in the mean K, thinnest corneal pachymetry, corneal thickness at the apex, back elevation, or front elevation (all P > 0.05). The mean total anterior, central, and posterior CD differed significantly among the time points, with a significant increase from the preoperative to the 1-month and 3-month postoperative visits (all P < 0.05) and no difference between those of the 1-month and 3-month postoperative visits (all P > 0.05). The mean CD for the anterior layer in the central, ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | https://mehdijournal.com/index.php/mehdiophthalmol/article/view/1161/789; https://mehdijournal.com/index.php/mehdiophthalmol/article/view/1161 |
| DOI: | 10.51329/mehdiophthal1491 |
| الاتاحة: | https://mehdijournal.com/index.php/mehdiophthalmol/article/view/1161 https://doi.org/10.51329/mehdiophthal1491 |
| رقم الانضمام: | edsbas.7649D00A |
| قاعدة البيانات: | BASE |
| DOI: | 10.51329/mehdiophthal1491 |
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