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Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Graefes+Arch+Clin+Exp+Ophthalmol 2015 ; 253 (9): 1575-80 Nephropedia Template TP
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Metrics of the normal anterior sclera: imaging with optical coherence tomography #MMPMID26067393
Background: To investigate anterior scleral thickness in a cohort of healthy subjects using enhanced depth imaging anterior segment optical coherence tomography. Methods: Observational case series. The mean scleral thickness in the inferonasal, inferotemporal, superotemporal, and superonasal quadrant was measured 2 mm from the scleral spur on optical coherence tomography in healthy volunteers. Results: Fifty-three eyes of 53 Caucasian patients (25 male and 28 female) with an average age of 48.6 years (range: 18 to 92 years) were analysed. The mean scleral thickness was 571 ?m (SD 84 ?m) in the inferonasal quadrant, 511 ?m (SD 80 ?m) in the inferotemporal quadrant, 475 (SD 81 ?m) in the superotemporal, and 463 (SD 64 ?m) in the superonasal quadrant. The mean scleral thickness was significantly different between quadrants (p?0.0001, repeated measures one-way ANOVA). The association between average scleral thickness and age was statistically significant (p?0.0001, Pearson r?=?0.704). Conclusions: Enhanced depth imaging optical coherence tomography revealed the detailed anatomy of the anterior sclera and enabled non-invasive measurements of scleral thickness in a non-contact approach. The anterior scleral thickness varies significantly between quadrants, resembling the spiral of Tillaux. An association of increasing scleral thickness with age was found. Electronic supplementary material: The online version of this article (doi:10.1007/s00417-015-3072-5) contains supplementary material, which is available to authorized users.