Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus · 2013
Corneal thickness measured by Scheimpflug imaging in children with Down syndrome.
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Aslan Lokman, Aslankurt Murat, Yüksel Erdem, Özdemir Murat, Aksakal Esin, Gümüşalan Yakup, Özdemir Gökhan
Аннотация
PURPOSE: To measure corneal thickness via the use of a Scheimpflug imaging system (OCULUS Optikgeräte GmbH, Wetzlar, Germany) in children with Down syndrome.
METHODS: This prospective, nonrandomized, clinical trial included children with Down syndrome and age- and sex-matched healthy controls. All subjects received a complete ophthalmologic examination. Corneal topography measurements were acquired by means of Scheimpflug imaging. Central corneal thickness (CCT), thinnest point of cornea (TP), and corneal volume (CV) were analyzed.
RESULTS: A total of 27 children with Down syndrome and 37 control subjects were included in the study. In children with Down syndrome, the mean CCT was 494.27 ± 47 μm, the mean TP was 487 ± 49 μm, and the mean CV was 56.2 ± 6. In the controls, the mean CCT was 539.3 ± 40 μm, the mean TP was 538.0 ± 40.8 μm, and the mean CV was 61.3 ± 4. For all 3 parameters, the difference was statistically significant (P < 0.001). In the Down syndrome group, the CCT was <500 μm in 16 subjects (59.2%) and <450 μm in 5 (18.5%). In the control group, the CCT was <500 μm in 14 subjects (37.8%) and <450 μm in 2 (5.4%).
CONCLUSIONS: In this study, corneal thickness was less in children with Down syndrome than in healthy control subjects. Decreased corneal thickness may be an early sign of a degenerative corneal disease such as keratoconus in children with Down syndrome.
METHODS: This prospective, nonrandomized, clinical trial included children with Down syndrome and age- and sex-matched healthy controls. All subjects received a complete ophthalmologic examination. Corneal topography measurements were acquired by means of Scheimpflug imaging. Central corneal thickness (CCT), thinnest point of cornea (TP), and corneal volume (CV) were analyzed.
RESULTS: A total of 27 children with Down syndrome and 37 control subjects were included in the study. In children with Down syndrome, the mean CCT was 494.27 ± 47 μm, the mean TP was 487 ± 49 μm, and the mean CV was 56.2 ± 6. In the controls, the mean CCT was 539.3 ± 40 μm, the mean TP was 538.0 ± 40.8 μm, and the mean CV was 61.3 ± 4. For all 3 parameters, the difference was statistically significant (P < 0.001). In the Down syndrome group, the CCT was <500 μm in 16 subjects (59.2%) and <450 μm in 5 (18.5%). In the control group, the CCT was <500 μm in 14 subjects (37.8%) and <450 μm in 2 (5.4%).
CONCLUSIONS: In this study, corneal thickness was less in children with Down syndrome than in healthy control subjects. Decreased corneal thickness may be an early sign of a degenerative corneal disease such as keratoconus in children with Down syndrome.