PMC6699512_01
Photograph of the fundus in the case with diabetic macular edema. (A) Color fundus photography. (B) Fluorescein angiography.
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Color fundus photography and fluorescein angiography revealed an edematous macula and vessel leakage; thus, DME was diagnosed (Figure 1).
Macular conditions before dexamethasone implantation via optical coherence tomography angiography device. (A) Foveal thickness. (B) Superficial vessel density. (C) Deep vessel density. (D) Foveal avascular zone.
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For the DME in the right eye, DEX injection was planned for the right eye, and the preoperative evaluation showed a CMT of 385 muM, and a superficial VD of 48.74 percent, a deep VD of 53.12 percent and a foveal avascular zone (FAZ) of 0.165 mm2 (Figure 2).
Macular conditions one month after dexamethasone implantation assessed an optical coherence tomography angiography device. (A) Foveal thickness. (B) Superficial vessel density. (C) Deep vessel density. (D) Foveal avascular zone.
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Moreover, a considerably lower superficial VD of 45.97 percent and a deep VD of 45.40 percent were observed with an enlarged FAZ of 0.294 mm2 (Figure 3).
Macular conditions two months after dexamethasone implantation assessed using an optical coherence tomography angiography device. (A) Foveal thickness. (B) Superficial vessel density. (C) Deep vessel density. (D) Foveal avascular zone.
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VD further declined in both superficial (40.07 percent) and deep (40.91 percent) areas, while the FAZ measured 0.305 mm2, which was larger than previously observed (Figure 4).