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The illustration of the difference in tangential traction between previous techniques and this new technique. (a) When the edge of the macular hole (MH) was selected as the base of the flap, the tangential traction by the ILM could not be released enough, which resulted in massive gliosis. (b) There was no tangential traction by the ILM at the edge of MH of this new technique, which led to mild gliosis. ELM: external limiting membrane, EZ: ellipsoid zone, and IZ: interdigitation zone.
