Patent ID: 9103650
Filing Date: 2015-08-11
Classification: A61B,G01B

Abstract:
1. An optical tomographic image generation method of generating at least one two-dimensional tomographic image of an eye based on a plurality of intensity signals of a plurality of lines of a combined light of (a) a return light from the eye to which a measurement light has been applied and (b) a reference light that corresponds to the measurement light, the optical tomographic image generation method comprising the steps of: acquiring the plurality of intensity signals using a scanning unit which is arranged so as to move a measurement light that is applied to a retina of the eye through a cornea of the eye on the retina in a direction crossing an optical axis of an optical path of the measurement light; performing Fourier transformations on the plurality of intensity signals; averaging, in a state of complex numbers, the plurality of intensity signals after performing Fourier transformations on the plurality of intensity signals; converting the averaged plurality of intensity signals into real number data; and generating the at least one two-dimensional tomographic image of the eye based on the real number data, wherein the plurality of intensity signals are acquired after a coherence gate is adjusted to move toward the retina of the eye within a predetermined time when acquiring one two-dimensional tomographic image of the eye, and wherein the predetermined time is acquired based on at least (a) a scanning speed of the measurement light scanning the retina by using the scanning unit and (b) a lateral resolution of the measurement light scanning the retina by using the scanning unit used for acquiring the plurality of intensity signals.