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26.03.2016 | Original Paper | Ausgabe 1/2017

International Ophthalmology 1/2017

Telemedical assessment of optic nerve head and retina in patients after recent minor stroke or TIA

Zeitschrift:
International Ophthalmology > Ausgabe 1/2017
Autoren:
Johannes Wolz, Heinrich Audebert, Inga Laumeier, Michael Ahmadi, Maureen Steinicke, Caroline Ferse, Georg Michelson

Abstract

The aim of the study is to telemedically assess the prevalence of simple optic nerve atrophy and retinal arteriolar anomalies in subjects who have had a minor stroke or TIA within 14 days, and to compare these results with an age-matched control group. By using a mobile examination unit, retinal photographs were taken with a 45° non-mydriatic colour fundus camera (KOWA NM-45, non-mydriatic-alpha) in patients who had suffered from a minor stroke or TIA within 14 days of the time of the examination. Retinal photographs were focused on the optic nerve head region. Pupils were not dilated. The documented medical history and the retinal images were stored on a server using browser independent web-based software running on PCs, tablets and smartphones. After completing the upload of the medical interview and the retinal images into the electronic patient chart, all retinal images were evaluated via telemedicine by an experienced senior consultant ophthalmologist. Age-matched normotensive, non-diabetic subjects (aged 40–89 years) who reported no systemic or ocular diseases were used as the control group. Both study groups were divided into five decades of life (40–49; 50–59; 60–69; 70–79; 80–89 years). We calculated the prevalences and the ratios of prevalences of optic nerve atrophy and retinal arteriolar anomalies between the stroke and the control group per decades of life. 139 minor stroke or TIA subjects (aged 40–89 years) and 1611 age-matched control subjects were examined. In the stroke group, we found significantly increased prevalences of optic nerve atrophy and retinal arteriolar anomalies throughout the 5th–8th decade of life when compared to age-matched controls. The prevalence of optic nerve atrophy in stroke subjects outranged the prevalence in the controls depending on age-class by a factor of 3–21. Simple optic nerve atrophy is frequent in patients who have suffered from an ischemic stroke or TIA, and it seems to indicate vascular damage, indicating the necessity for telemedically assisted assessment of the optic nerve.

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