A full-field optical coherence tomography imaging method, FFOCT, for acquiring a bidimensional en face FFOCT image of a layer of interest at a depth within a sample, said FFOCT imaging method using a system comprising a FFOCT device and the sample comprising the layer of interest that is to be imaged, the FFOCT device comprising: - a spatially incoherent light source, - an imager, - a beam splitter defining a sample arm and a reference arm, the sample being arranged at an extremity of the sample arm, wherein the method comprises: - simultaneously illuminating the sample arm and the reference arm at an illumination instant with an illuminating light emitted by the incoherent light source to generate sample light travelling from the sample into the extremity of the sample arm along a sample optical path and reference light traveling in the reference arm to the beam splitter along a reference optical path, - acquiring a bidimensional en face FFOCT image of the layer of interest with the imager from reference light and sample light combined in the beam splitter; wherein the sample light contains interest light derived from the illuminating light emitted at the illumination instant and originating from the layer of interest of the sample, said interest light having travelled a first optical path length when entering the sample arm, said first optical path length having a curved profile of transverse variation distribution, wherein reference light incident on the imager has travelled a reference optical path length along the reference optical path, and interest light incident on the imager has travelled a second optical path length, characterised in that at least one of the sample arm and the reference arm comprises an optical curvature compensator (112, 120) that modifies a transverse variation distribution of an optical path length to compensate the curved profile of transverse variation distribution of the first optical path length, so that the transverse variation distribution of the reference optical path length travelled by the reference light incident on the imager and the transverse variation distribution of the second optical path length travelled by the interest light incident on the imager coincide, resulting in the interest light originating from the layer of interest interfering with the reference light and the imager imaging the layer of interest over a field of view of the imager to form the bidimensional en face FFOCT image acquired by the imager. - a spatially incoherent light source, - an imager, - a beam splitter defining a sample arm and a reference arm, the sample being arranged at an extremity of the sample arm, wherein the method comprises: - simultaneously illuminating the sample arm and the reference arm at an illumination instant with an illuminating light emitted by the incoherent light source to generate sample light travelling from the sample into the extremity of the sample arm along a sample optical path and reference light traveling in the reference arm to the beam splitter along a reference optical path, - acquiring a bidimensional en face FFOCT image of the layer of interest with the imager from reference light and sample light combined in the beam splitter; - simultaneously illuminating the sample arm and the reference arm at an illumination instant with an illuminating light emitted by the incoherent light source to generate sample light travelling from the sample into the extremity of the sample arm along a sample optical path and reference light traveling in the reference arm to the beam splitter along a reference optical path, - acquiring a bidimensional en face FFOCT image of the layer of interest with the imager from reference light and sample light combined in the beam splitter; wherein the sample light contains interest light derived from the illuminating light emitted at the illumination instant and originating from the layer of interest of the sample, said interest light having travelled a first optical path length when entering the sample arm, said first optical path length having a curved profile of transverse variation distribution, wherein reference light incident on the imager has travelled a reference optical path length along the reference optical path, and interest light incident on the imager has travelled a second optical path length, characterised in that at least one of the sample arm and the reference arm comprises an optical curvature compensator (112, 120) that modifies a transverse variation distribution of an optical path length to compensate the curved profile of transverse variation distribution of the first optical path length, so that the transverse variation distribution of the reference optical path length travelled by the reference light incident on the imager and the transverse variation distribution of the second optical path length travelled by the interest light incident on the imager coincide, resulting in the interest light originating from the layer of interest interfering with the reference light and the imager imaging the layer of interest over a field of view of the imager to form the bidimensional en face FFOCT image acquired by the imager.