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Diagnostic performance of corneal epithelium- and Bowman's layer thickness mapping in patients with unilateral Keratoconus.
Graefes Arch Clin Exp Ophthalmol
January 2025
Department of Ophthalmology and Optometry, Medical University of Vienna, Vienna, Austria.
Purpose: To investigate the role of corneal epithelium- and Bowman's layer-thickness (ET and BLT) changes as possible early biomarkers of keratoconus (KC) development.
Methods: In this cross-sectional study patients with unilateral KC (UKC) and a group of healthy controls underwent polarization sensitive optical coherence tomography (PS-OCT) for the evaluation of corneal ET and BLT. These values were compared among three subgroups of eyes, i.
Application of Stem Cell-Derived Exosomes in Anterior Segment Eye Diseases: A Comprehensive Update Review.
Ocul Surf
January 2025
School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran.
Mesenchymal stem cell (MSC) therapy has emerged as a promising approach for addressing various eye-related conditions. Yet, its clinical application faces challenges due to issues such as limited biocompatibility and difficulties in effectively delivering treatment to specific ocular tissues. Recent studies have shifted attention towards MSC-derived exosomes, which share similar regenerative, reparative, and immunomodulatory capabilities with their origin cells.
View Article and Find Full Text PDFProteomics Reveals Mechanisms of Delayed Keratoconus Progression: A Study of Corneas Following Two Light-Activated Crosslinking Treatments.
Invest Ophthalmol Vis Sci
January 2025
University Eye Clinic Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands.
Article Synopsis
- This study investigates the biological changes in rabbit corneas caused by two light-activated corneal stiffening methods: riboflavin with UVA and WST11 with NIR.
- Differentially expressed proteins were identified following treatments, showing RF-D/UVA affected cell metabolism and keratocyte differentiation, while WST-D/NIR influenced extracellular matrix regulation.
- The findings reveal a metabolic shift towards glycolysis in RF-D/UVA treated corneas compared to normal respiration in WST-D/NIR treated corneas, highlighting the distinct biological effects of each treatment.
Enhanced Transepithelial Riboflavin Delivery Across the Cornea Using Magnetic Nanocarriers.
J Ocul Pharmacol Ther
January 2025
Department of Analytical Chemistry, Faculty of Pharmacy, Ankara Medipol University, Ankara, Turkey.
Keratoconus is a progressive corneal ectasia characterized by irregular astigmatism, leading to corneal scarring and decreased vision. Corneal cross-linking (CXL) is the standard treatment to halt disease progression, but its effectiveness in transepithelial (epithelium-on, epi-on) approaches is limited by the low permeability of the corneal epithelium to riboflavin (Rb). This study aimed to enhance transepithelial Rb penetration in bovine corneas using Rb-modified tannic acid-coated superparamagnetic iron oxide nanoparticles (Rb-TA-SPIONs) under an external magnetic field.
View Article and Find Full Text PDFSelf-reported prevalence and risk factors associated with keratoconus among the adult population of Trinidad and Tobago: a cross-sectional study.
Int Ophthalmol
January 2025
Discipline of Optometry, University of KwaZulu-Natal, Durban, South Africa.
Aim: To determine the prevalence of keratoconus and its associated risk factors within the adult population of Trinidad and Tobago.
Method: A population-based cross-sectional study was conducted among adults in Trinidad and Tobago, utilizing the Keratoconus Risk Assessment Questionnaire (KRIS) for data collection. Data were exported to the Statistical Package for Social Sciences (SPSS) version 27 for analysis.
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