Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance

10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits


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Characterization of deeply embedded corneal foreign bodies with anterior segment optical coherence tomography

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Session Details

Session Title: Presented Poster Session: Solutions for Traumatic Cases

Session Date/Time: Tuesday 13/09/2016 | 09:30-11:00

Paper Time: 09:30

Venue: Poster Village: Pod 3

First Author: : F.Segev ISRAEL

Co Author(s): :    S. Armarnik   M. Mimouni   D. Goldenberg   N. Geffen     

Abstract Details


We aimed to describe findings seen on anterior spectral domain optical coherence tomography (AS-OCT) in various types of deeply embedded corneal foreign bodies


General Hospital


An ex vivo model of calf eyes was used to study deeply embedded corneal foreign bodies consisting of 5 different materials: metal, glass, plastic, pencil graphite and wood. The study included 6 eyes with 7 corneal foreign bodies. Each eye was photographed and then scanned by AS-OCT under various settings (corneal, scleral and angle). Images were then analyzed to determine distinguishing characteristics for each material


Each foreign body demonstrated unique characteristics in AS-OCT. The opaque materials (pencil graphite, metals and wood) demonstrated a hyper reflective anterior border, whereas the posterior border signal could not be clearly identified due to the shadowing effect. Moreover, a chain of signals was characteristic of both pencil graphite and metals though a “mirroring effect” was unique for metals. Wood, as an opaque material, appears as a hyper-reflective mass with a spectrum of penetrability depending on the degree of concentration. Transparent materials demonstrated hyper-reflective sharp borders when surrounded by air or fluid, as opposed to when being embedded purely in the corneal stroma


Using AS-OCT a novel set of distinguishing characteristics was established for the identification of the 6 studied materials. We recommend that AS-OCT be part of the evaluation of patients with deeply embedded corneal foreign bodies

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