Optical Coherence Tomography Angiography Characteristics Serve as Retinal Vein Occlusion Therapeutic Biomarkers for Dexamethasone Intravitreal Implant

Figure 7

Representative images of ME secondary to branch retinal vein occlusion (BRVO-ME) before and after the intravitreal injection of dexamethasone intravitreal implant. (a) A 62-year-old female patient with BRVO-ME. Typical cystoid edema was observed in both En-face image and B-scan image of OCTA. HRF (yellow arrowhead) and cystoid edema (yellow asterisk) were pointed out in B-scan image of OCTA. (b) En-face and B-scan images showed remarkable alleviation of cystoid edema and reduction of HRF (yellow arrowhead) after treatment. (c, d) Merged images of both angiograph and En-face image (lower) at baseline (c) and post-injection (d). The gray value of the area crossed by horizontal lines, generated by ImageJ software, was displayed (upper). HRF: hyperreflective foci.

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