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Posters

Choroidal thickness in normal paediatric population meassured by enhanced depth imaging optical coherence tomography

Poster Details

First Author: L.Herrera SPAIN

Co Author(s):    I. Pinilla   I. Perez   D. Perez   C. Almenara   K. Zabadani   J. Ascaso   0   0 0   0 0   0 0   0 0

Abstract Details



Purpose:

To evaluate choroidal thickness during childhood using enhanced depth imaging (EDI) spectral-domain optical coherence tomography (SD-OCT) as well as the repeatability and reproducibility of the measurements

Setting:

Lozano Blesa University Hospital, Av San Juan Bosco, 15. Zaragoza, Spain.

Methods:

Cross-sectional study in which 93 eyes of 93 healthy children were studied using a 25 A-scans-EDI SD-OCT protocol. Choroidal thickness was segmented manually, and an ETDRS grid was applied to analyze choroidal thickness and volume in each of its nine sectors. Two observers independently studied 30 children to assess repeatability and reproducibility, using intraclass coefficient (ICC).

Results:

We included 50 males and 43 females, with mean age of 9.62±2.89 years, mean refractive error (spherical equivalent) +0.03±2.22D and mean axial length (AL) of 23.19±13mm. Mean subfoveal choroidal thickness (SFCT) and volume was 314.22 ±55.48µ, and 0.25±0.04mm3, respectively. SFCT was significantly thicker in the hyperopic group (AL 22.39±0.83mm). There were no statistically significant differences between myopic (AL 24.33±0.76mm) and emmetropic (AL 23.27±0.54mm) children. Inter and intra-observer ICC of the nine sector of the ETDRS grid ranged from 0.929-0.991 and 0.992-0.998, respectively

Conclusions:

Pediatric SFCT is greater in hyperopic children. Manual choroidal thickness segmentation by EDI SD-OCT showed a high inter and intra-observer repeatability

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