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- W2337509432 abstract "Purpose: To investigate the relationship between quantitative iris parameters and the presence of keratoconus. Methods: Cross-sectional observational study that included 15 affected eyes of 15 patients with keratoconus and 26 eyes of 26 normal age- and sex-matched controls. Iris parameters (area, thickness, and pupil diameter) of affected and unaffected eyes were measured under standardized light and dark conditions using anterior segment optical coherence tomography (AS-OCT ). To identify optimal iris thickness cutoff points to maximize the sensitivity and specificity when discriminating keratoconus eyes from normal eyes, the analysis included the use of receiver operating characteristic (ROC) curves. Results: Iris thickness and area were lower in keratoconus eyes than in normal eyes. The mean thickness at the pupillary margin under both light and dark conditions was found to be the best parameter for discriminating normal patients from keratoconus patients. Diagnostic performance was assessed by the area under the ROC curve (AROC), which had a value of 0.8256 with 80.0% sensitivity and 84.6% specificity, using a cutoff of 0.4125 mm. The sensitivity increased to 86.7% when a cutoff of 0.4700 mm was used. Conclusions: In our sample, iris thickness was lower in keratoconus eyes than in normal eyes. These results suggest that tomographic parameters may provide novel adjunct approaches for keratoconus screening." @default.
- W2337509432 created "2016-06-24" @default.
- W2337509432 creator A5025510799 @default.
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- W2337509432 date "2015-01-01" @default.
- W2337509432 modified "2023-09-27" @default.
- W2337509432 title "Quantitative analysis of iris parameters in keratoconus patients using optical coherence tomography Uso de tomogra耀a de coerência óptica na análise quantitativa dos parâmetros irianos em pacientes com ceratocone" @default.
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