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Park, Koo, and Seo: Spectral-Domain Optical Coherence Tomography Findings in Acute Central Retinal Artery Occlusion
Original Article
Journal of the Korean Ophthalmological Society

Journal of the Korean Ophthalmological Society 2012; 53(8): 1099-1103.

Published online: 17 August 2012

DOI: https://doi.org/10.3341/jkos.2012.53.8.1099

Spectral-Domain Optical Coherence Tomography Findings in Acute Central Retinal Artery Occlusion

Jae Yeong Park, MD, Nam Kyun Koo, MD, Won Moon Seo, MD

Department of Ophthalmology, Dongkang Medical Center, Ulsan, Korea.

Address reprint requests to Won Moon Seo, MD. Department of Ophthalmology, Dongkang Medical Center, #239 Taehwa-ro, Jung-gu, Ulsan 681-711, Korea. Tel: 82-52-241-1331, Fax: 82-52-241-1146, mdseowm@msn.com

Received 23 December 2011       Accepted 30 June 2012

Copyright © 2012 The Korean Ophthalmological Society

Abstract

Purpose

To evaluate spectral-domain optical coherence tomography (SD-OCT) images of acute central retinal artery occlusion (CRAO).

Methods

Six eyes of 6 patients who were diagnosed with acute CRAO were enrolled in the present study. The main SD-OCT measurements included macular thickness in the macular cube map and retinal thickness in the 5-line raster map.

Results

In acute CRAO, macular thickness increased more than that in the normal fellow eye in all cases. SD-OCT images demonstrated increased reflectivity and thickness in the inner retinal layer, especially in the nerve fiber layer and ganglion cell layer. However, in the outer retinal layer, SD-OCT images disclosed decreased reflectivity and increased thickness. The central subfield thickness area image showed normal reflectivity and thickness. The horizontal cross-sectional image showed relatively the same edema ratio between the inner retinal layer and outer retinal layer thickness. There was no cystoid or serous foveal detachment-type edema.

Conclusions

SD-OCT images of CRAO showed increased outer retinal layer thickness and decreased reflectance as well as increased inner retinal layer thickness and reflectance. However, inner segment and outer segment junctions of the photoreceptor and retinal pigment epithelial signal were intact.

Keywords: Central retinal artery occlusion, Spectral-domain optical coherence tomography

Figures and Tables

Figure 1
ETDRS subfields within standard three concentric circles of diameters 1,3 and 6 mm in the right eye used for reporting retinal thickness. F = fovea; SI = superior inner; TI = temporal inner; II = inferior inner; NI = nasal inner; SO = superior outer; TO = temporal outer; IO = inferior outer; NO = nasal outer.
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Figure 2
Double-headed arrows indicate various thickness. SRT = sensory retinal thickness; IRT = inner retinal thickness; MFT = minimal foveal thickness.
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Figure 3
Optical coherence tomography images of case 1. The macular cube map demonstrates increased thickness on the macular area. The horizontal cross sectional image demonstrates increased reflectivity and thickness of the inner retinal layers, but decreased reflectivity in the outer retinal layer. Beneath the fovea, there is an area of normal reflectivity of the IS/OS line and RPE layer.
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Table 1
Patient characteristics
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VA = visual acuity; FC = finger count; HM = hand motion.

Table 2
ETDRS subfield average thickness
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Values are presented as mean ± SD or %.

CRAO = central retinal artery occlusion.

Table 3
Retinal thickness of horizontal cross-sectional view
jkos-53-1099-i003

Values are presented as mean ± SD or %.

*Nasal 1 mm; †Temporal 1 mm; ‡Nasal 1.5 mm; §Temporal 1.5 mm.

Table 4
Retinal layer thickness ratio
jkos-53-1099-i004

Values are presented as mean ± SD.

IR = inner retinal thickness; SR = sensory retinal thickness; OR = outer retinal thickness.

*Nasal 1 mm; †Nasal 1.5 mm; ‡Temporal 1 mm; §Temporal 1.5 mm.

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