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Morphological features of the choroidoscleral interface in a healthy population using Swept-source Optical Coherence Tomography

Session Details

Session Title: Imaging II

Session Date/Time: Friday 18/09/2015 | 16:30-18:00

Paper Time: 16:54

Venue: Thalie.

First Author: : J.RuizMedrano SPAIN

Co Author(s): :    J. RuizMedrano   I. Flores-Moreno   J. Montero   J. Duker   J. RuizMoreno  

Abstract Details

PURPOSE:The aim of this paper is to analyze the morphological features of the choroidoscleral interface in a healthy population using swept-source optical coherence tomography (SS-OCT).

Setting:

Universidad de Castilla-La Mancha. Spain.

Methods:

Cross-sectional, non-interventional study. 276 eyes from 154 healthy patients, with spherical equivalent (SE) ±3D were scanned using a SS-OCT (Topcon Corporation, Japan). Two independent investigators performed an analysis of the morphological features of the choroidoscleral interface in a masked fashion, classifying the contour and shape as being convex (or bowl-shaped) or S-shaped (having an irregular or concave-convex-concave shape with ≥1 inflection point). If the contour was labeled as S-shaped, choroidal thickness (CT) at the level of the inflection point was measured as well as the distance to the fovea.

Results:

Convex contour was found in 240 from 276 eyes (87.2%) vs. S-shaped profile identified in 36 eyes (12.8%); 19 left eye/17 right eye. All were found in the temporal aspect of the choroid. Only one inflection point was found in all cases, with a mean distance to the fovea of 4427.3±627.9 µm (range 2531 to 5492) and mean CT of 372.1±76.8 µm (range 168 to 538). In nine cases the S-shaped profile was bilateral. No changes in retinal profile were found in any of these cases. Mean age of the patients with S-shaped profile was 16±19 years (range 4 to 82) vs. 36±25 years (range 3 to 95) in the group with bowl-shaped contour (p=0.001) in which temporal CT was thicker at 4,000 and 5,000 µm from the fovea.

Conclusions:

S-shaped profile at the temporal sector without focal thinning of the choroid can be considered a normal variation without clinical significance, especially among young people.

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