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Clinical Relevance: There is growing evidence for the involvement of sex hormones in the pathogenesis of keratoconus.
Background: This study aimed to evaluate serum androgen and prolactin levels in patients suffering from keratoconus.
Methods: One hundred and two subjects were enrolled in the keratoconus (76 patients) and control (26 subjects) groups in a cross-sectional survey. Topographic evaluation of the cornea was undertaken for all enrolled participants. Serum testosterone, dehydroepiandrosterone sulphate (DHEAS), prolactin (PRL), luteinising hormone (LH), and follicle-stimulating hormone (FSH) were measured in all subjects.
Results: There was no significant difference in demographic characteristics between the study groups. Significantly higher mean serum levels of DHEAS (3.71 ± 2.23 vs. 2.53 ± 1.77 µg/mL; P = 0.009) and T (6.18 ± 3.80 vs. 1.57 ± 1.76 ng/mL; P < 0.001) were observed in men with keratoconus compared to controls. In females, there were also higher mean levels of DHEAS (2.40 ± 1.57 vs. 2.18 ± 0.72 µg/mL; P = 0.355) and T (0.78 ± 0.96 vs. 0.32 ± 0.13 ng/mL; P < 0.001) in patients with keratoconus but only T level reached the statistically significant level of difference. Also, the mean serum PRL level was significantly higher in women with keratoconus compared to control (13.33 ± 17.85 vs. 4.63 ± 3.10 ng/mL; P < 0.001). There was no significant difference between serum FSH and LH levels between study groups.
Conclusion: In patients with keratoconus, serum PRL in females and serum androgen levels in both genders are elevated.
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http://dx.doi.org/10.1080/08164622.2022.2081067 | DOI Listing |
Ophthalmol Sci
July 2025
Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio.
Purpose: To determine the proximity between the thinnest corneal point (TCP) and focal corneal weakening in normal, subclinical keratoconus (SKC), and manifest keratoconus (KC) eyes using motion-tracking Brillouin microscopy.
Design: Prospective cross-sectional study.
Participants: Ninety-five eyes from 95 patients were evaluated: 40 from bilaterally normal patients (controls), 40 from patients with SKC, and 15 from patients with manifest KC.
Cornea
September 2025
Eskişehir Osmangazi University, Faculty of Medicine, Department of Ophthalmology, Eskişehir, Turkey.
Purpose: To investigate the natural progression of keratoconus (KC) with respect to age, gender, and disease severity at presentation.
Methods: This study analyzed 949 eyes from 503 patients with KC followed at Eskişehir Osmangazi University and Istanbul University-Cerrahpaşa between 2009 and 2023. Patients with ≥1 year of follow-up with ≥3 Pentacam (Oculus, Inc) scans spaced ≥3 months apart were eligible.
Cornea
September 2025
Instituto de Oftalmologia Fundacion Conde de Valenciana IAP, Mexico City, Mexico.
Purpose: To analyze the trends and characteristics of eye banking and corneal transplantation over a 12-year period at an ophthalmological center in Mexico City.
Methods: We performed a retrospective, descriptive study including all patients who underwent corneal transplantation at a Mexican ophthalmology reference center between January 2011 and December 2022. Statistical analyses were conducted with data reported as complete counts or mean with standard deviations.
PLoS One
September 2025
Department of Experimental Ophthalmology, Saarland University, Homburg, Germany.
Purpose Prediction of the ectasia screening index, an estimator provided by the Casia2 instrument for identifying keratoconus, from raw optical coherence tomography data using convolutional neural networks. Methods Three convolutional neural networks models (ResNet18, DenseNet121 and EfficientNetB0) were employed to predict the ectasia screening index. Mean absolute error was used as the performance metric for predicting the ectasia screening index by the adapted convolutional neural network models on the test set.
View Article and Find Full Text PDFEur J Ophthalmol
September 2025
Department of Ophthalmology and Visual Sciences, Escola Paulista de Medicina, Hospital São Paulo, Universidade Federal de São Paulo, Sao Paulo, SP, Brazil.
PurposeThis study evaluated the safety and effectiveness of two models of intrastromal corneal ring segments (ICRS)-symmetric (uniform thickness and base width) and asymmetric (progressive thickness and base width)-for the treatment of oval phenotype keratoconus.MethodsA prospective, randomized, controlled clinical study was conducted on 64 eyes from 47 patients, divided into two groups: Group 1 (33 eyes) received symmetric ICRS, and Group 2 (31 eyes) received asymmetric ICRS. Comprehensive ophthalmic evaluations, including visual acuity, corneal topography, tomography, and aberrometry, were performed preoperatively and at 1, 3, 6, and 12 months postoperatively.
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