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- Title
Análise comparativa entre os índices tomográficos em pacientes com ceratocone inicial.
- Authors
Wellington Rodrigues, Francisco; Vilela, Ana Beatriz Vieira; Faustino Nishi, Julia; Egídio da Silva, Rodrigo
- Abstract
Objective: To assess sensitivity of corneal volume, corneal asphericity, and D index in early diagnosis of keratoconus. Methods: A cross-sectional analytical study, carried out between December 2018 and October 2020, which analyzed the medical records of 39 patients (78 eyes) diagnosed as keratoconus by a single corneal specialist, using the criteria of Belin-Ambrosio Enhanced Ectasia Display. The collected data were anterior asphericity, posterior asphericity, D index and its parameters (Da, Db, Dt, Dp and Df). The data were entered and handled in Excel, for later data treatment using the software Statistical Package for Social Science, version 21.0, for Windows. The categorical variables were presented as absolute value and percentages. The continuous variables were presented as mean±standard deviation, and median (95% of confidence interval). Results: We analyzed 78 eyes, mean age of 28.2±5.8 years, 59.0% of sample were female, and 41.0%, male. The D index showed a close relation to its Db parameter in the cases of keratoconus at early stage, while Dt parameter showed a reduced relation. Conclusion: The correlation between the D index and its Db parameter suggests early changes in the posterior corneal elevation, contributing to early diagnosis of subclinical keratoconus.
- Subjects
CORNEA; MICROSOFT Windows (Operating system); MICROSOFT Excel (Computer software); ABSOLUTE value; KERATOCONUS; STATISTICAL software; DIAGNOSIS; EARLY diagnosis
- Publication
Revista Brasileira de Oftalmologia, 2021, Vol 80, Issue 3, p1
- ISSN
0034-7280
- Publication type
Article
- DOI
10.37039/1982.8551.20210003