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Andre Romano, Rubens Belfort; En-face optical coherence tomography of ocular toxoplasmosis. Invest. Ophthalmol. Vis. Sci. 2013;54(15):3609.
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© ARVO (1962-2015); The Authors (2016-present)
En-face optical coherence tomography (OCT) provides a high resolution, transversal OCT image from vitreo-retinal interface to the deep layers of the choroid. Application of this approach in routine clinical practice is relatively new and its clinical interpretation is a challenge. The purpose of this study was to use this approach to evaluate patients with ocular toxoplasmosis.
En-face OCT imaging approach involves scanning in the XY plane. Fifteen eyes of 15 patients with ocular toxoplasmosis were assessed using en face imaging approach and standard scanning protocols through the macula.
En face images showed tractive forces of epiretinal membranes formation in acute stages. Visualization at the level of the inner nuclear layer depicts presumed vascular sheathing never described before. Scaring was clearly delineated in configuration and size with a characteristic peak below the RPE area at the level of the choroid greater vessels.
En-face OCT imaging approach provides a better overview of the whole area of interest, allowing identification of microstructural information and focal changes in toxoplasmic retinochoroiditis. However this technique is currently limited by the lack of automation and resolution of current commercially available SD-OCT systems.
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