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Giacomo Panozzo, Stefano Casati, Elena Gusson; Optical Coherence Tomography Findings In Acute And Chronic Retinal Artery Occlusion. Invest. Ophthalmol. Vis. Sci. 2012;53(14):970.
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© ARVO (1962-2015); The Authors (2016-present)
To report spectral domain optical coherence tomography (SD-OCT) findings in acute and chronic retinal artery occlusions (RAO), and to compare these findings with other causes of inner retinal atrophy.
Two cases of central retinal artery occlusion (CRAO) with perfused cilio-retinal artery and one case of cilio-retinal artery occlusion were observed in the acute phase and then followed for four months with SD-OCT. Other 4 cases of chronic central and branch RAO were also evaluated. SD-OCT images of different causes of inner retinal atrophy (advanced glaucoma and ischemic optic neuropathy) are reported and compared.
In the acute phase of RAO, SD-OCT discloses thickening and increased reflectivity of the inner retinal layers with shadowing effect on outer structures, and sharp demarcation between perfused and non-perfused retina. In the chronic phase, SD-OCT reveals severe and complete inner retinal atrophy and homogeneous intra-retinal structure, while outer nuclear layer and IS-OS/RPE hyper-reflective lines remain intact. On the contrary, in advanced glaucoma and optic neuropathy the inner retinal structure although reduced remains clearly detectable.
SD-OCT in acute-CRAO demonstrates swelling of the inner retinal layers and sharp demarcation of the affected. In the chronic phases the homogeneous inner atrophy with absence of identifiable retinal layers represents a distinctive marker of RAO compared with other causes of inner retinal atrophy.
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