Patent ID: 9149181
Filing Date: 2015-10-06
Classification: A61B

Abstract:
1. An image photographing apparatus comprising: a detecting unit configured to detect combined light of return light from an eye and reference light, the return light being obtained by irradiating the eye with measuring light, the reference light corresponding to the measuring light; a scanning unit configured to scan the measuring light on the eye; and a unit configured to generate a tomographic image of a fundus of the eye in accordance with a calculation involving (1) data regarding an optical distance between a position optically conjugate with the scanning unit and a position in an optical path of the measuring light, corresponding to an optical path length of the reference light, (2) data, determined using a relationship between a first angle formed between the measuring light entering an inside of the eye to be inspected and an optical axis of the eye and a second angle formed between the measuring light inside the eye to be inspected and the optical axis of the eye, regarding the second angle, (3) the combined light detected by the detecting unit, and (4) data regarding a refractive index of a refractive element inside the eye.