Wide-field swept-source OCT angiography of the periarterial capillary-free zone before and after anti-VEGF therapy for branch retinal vein occlusion.

"Declarations Ethics approval and consent to participateThe study adhered to the tenets of the Declaration of Helsinki and was approved by the Ethical Committee Review Board of Fudan University Eye and ENT Hospital. Consent for publicationWritten informed consent for publication of their clinical details and/or clinical images was obtained from the patient. Competing interestsThe authors declare that they have no competing interests. Competing interests The authors declare that they have no competing interests."

"Funding This work was supported by grants from the National Natural Science Foundation of China (Grant Nos. 82101150, 82171078), Shanghai clinical 3-year action plan-major clinical research (Grant Nos. SHDC2020CR2041B, SHDC2020CR5014-003), Shanghai Sailing Program (Grant No. 21YF1405300), and Shanghai Committee of Science and Technology (Grant Nos. 20Y11911100, 18411965100)."