Corneal Haze After Transepithelial Collagen Cross-linking for Keratoconus: A Scheimpflug Densitometry Analysis
Purpose: To quantitate corneal haze and analyze the postoperative time course of corneal haze after transepithelial corneal collagen cross-linking (TECXL) in patients with keratoconus. Methods: Patients underwent TECXL and were randomized into 2 groups. One group received intraoperative riboflavin 0.10% every minute, and the second group received riboflavin 0.10% every 2 minutes during ultraviolet exposure. Scheimpflug densitometry was measured preoperatively, and at 1, 3, 6, and 12 months to assess the postoperative time course. Densitometry measurements were also correlated with visual acuity, pachymetry, and topography outcomes. Results: Fifty-nine eyes of 43 patients with keratoconus were analyzed. Preoperative mean corneal densitometry was 20.45 ± 2.79. Mean densitometry increased at 1 month (22.58 ± 3.79; P
The aim of this study was to determine the sociodemographic and risk factors for KC patients with a nationwide Asian data base.
We report an up-to-date review of the state of the art of CXL and describe the basic principles, the different existing CXL techniques reporting basic and clinical evidence, as well as the new perspectives and the possible future developments of the procedure. PMID: 32972759 [PubMed - as supplied by publisher]
Conclusion: Using standardized FSL parameters for both incision design and cut energy in BBDALK surgery, pneumatic dissection can be achieved in a very high rate of cases with minimal risk of intraoperative complications. PMID: 32963820 [PubMed]
Authors: Scharf D, Yildirim TM, Auffarth GU, Mayer CS, Choi CY, Khoramnia R PMID: 32967034 [PubMed - as supplied by publisher]
Condition: Keratoconus Intervention: Device: corneal tomography scans Sponsor: Assiut University Not yet recruiting
Abstract PURPOSE: To evaluate the agreement of central corneal thickness (CCT) measurement between Scheimpflug imaging and ultrasound (U/S) pachymetry in keratoconic eyes, and investigate factors that affect the agreement. METHODS: This post hoc analysis within a prospective, observational non-randomised study preformed at the Kensington Eye Institute, Toronto, Ontario, Canada, included crosslinking candidates with progressive keratoconus (KC). Main outcome measures were the agreement of CCT measurement between Scheimpflug imaging (Pentacam Oculus, Wetzlar, Germany) and U/S pachymetry (PachPen 24-5100, Accuto...
CONCLUSION: This study aimed to show the principle of supervised machine learning applied to a set-up for the modelled classification of keratoconus staging. Preprocessed measurement data extracted from the Corvis®ST device were used to mimic the TKC provided by the Pentacam device with a series of different algorithms of machine learning. PMID: 32970190 [PubMed - as supplied by publisher]
Prerna Ahuja, Zelda Dadachanji, Rohit Shetty, Sowmya Arudi Nagarajan, Pooja Khamar, Swaminathan Sethu, Sharon D'SouzaIndian Journal of Ophthalmology 2020 68(10):2067-2074 Keratoconus (KC) is an ectatic disease of the cornea characterized by localized thinning and protrusion causing irregular astigmatism, which can lead to significant visual impairment. KC has often been associated with allergy and/or atopy, which are immune-mediated inflammatory reactions primarily driven by IgE. A higher proportion of KC patients were reported to have history or suffer from systemic and/or ocular allergy with elevated allergen-specif...
Authors: Georgeon C, Bouheraoua N, Borderie V PMID: 32950289 [PubMed - as supplied by publisher]
Abstract PURPOSE: To assess signs of dry eye syndrome in keratoconic eyes following intracorneal ring segment (ICRS) implantation. PATIENT AND METHODS: Twenty eyes of 20 consecutive patients with keratoconus were assessed for tear film changes following ICRS implantation at 6 months postoperatively. Evaluated parameters included tear osmolarity, non-invasive tear breakup time test (NI-BUT test) and Schirmer test I and II before and after treatment. RESULTS: No significant changes were found with respect to osmolarity, Schirmer I and II (p = 0.9, p