Method for optical coherence tomography, in which: - light having a mean wavelength (λ) is coupled into an interferometer, - the interferometer emits light, with which a sample is irradiated, wherein the interferometer comprises a beam splitter and a reflector, - light reflected by the sample at a depth in the sample is detected by a detector, wherein the depth in the sample of the light reflected by the sample and detected by the detector is adjusted by a change of the distance of the reflector from the beam splitter, said change of the distance being substantially larger than the mean wavelength (λ) of the light which is coupled into the interferometer, - the imaging properties of a sample objective located between the beam splitter and the sample are controlled in such a way that a focus located in or on the sample, at which the light emitted by the interferometer is focused, is located in the region of the depth of the sample, - for a certain finite depth, the reflector is brought in at least three different positions (P1, P2, P3) having different optical distances from the beam splitter, wherein the increment between the different positions (P1, P2, P3) is smaller than the mean wavelength (λ) and, while the reflector is located at the respective position (P1, P2, P3), the light reflected by the sample at a certain depth in the sample is detected several times by the detector and is converted into corresponding detector images in the form of interference images, - the detector images obtained for the respective position (P1, P2, P3) of the reflector are averaged, whereby a respective averaged detector image (I 0, I 120, I 240) is obtained in the form of an averaged interference image, and a tomogram for the certain finite depth is determined from the averaged detector images (I 0, I 120, I 240) obtained for the different positions (P1, P2, P3) of the reflector. - light having a mean wavelength (λ) is coupled into an interferometer, - the interferometer emits light, with which a sample is irradiated, wherein the interferometer comprises a beam splitter and a reflector, - light reflected by the sample at a depth in the sample is detected by a detector, wherein the depth in the sample of the light reflected by the sample and detected by the detector is adjusted by a change of the distance of the reflector from the beam splitter, said change of the distance being substantially larger than the mean wavelength (λ) of the light which is coupled into the interferometer, - the imaging properties of a sample objective located between the beam splitter and the sample are controlled in such a way that a focus located in or on the sample, at which the light emitted by the interferometer is focused, is located in the region of the depth of the sample, - for a certain finite depth, the reflector is brought in at least three different positions (P1, P2, P3) having different optical distances from the beam splitter, wherein the increment between the different positions (P1, P2, P3) is smaller than the mean wavelength (λ) and, while the reflector is located at the respective position (P1, P2, P3), the light reflected by the sample at a certain depth in the sample is detected several times by the detector and is converted into corresponding detector images in the form of interference images, - the detector images obtained for the respective position (P1, P2, P3) of the reflector are averaged, whereby a respective averaged detector image (I 0, I 120, I 240) is obtained in the form of an averaged interference image, and a tomogram for the certain finite depth is determined from the averaged detector images (I 0, I 120, I 240) obtained for the different positions (P1, P2, P3) of the reflector.