Patent ID: 7160288
Filing Date: 2007-01-09
Classification: A61B,A61F

Abstract:
1. An ophthalmic apparatus comprising: a presenting optical system presenting a fixation target for guiding a visual axis of a patient's eye with accuracy, the presenting optical system including: a first optical axis, one of a small aperture and a micro mirror as a first fixation target, which is placed at a first position on the first optical axis; and a fixation light source as a second fixation target, which is placed at a second position on the first optical axis separate from the first position, wherein the visual axis coincides with the first optical axis by making the eye fixate the second fixation target via the first fixation target; an image-pickup optical system picking up a front image of an anterior segment of the eye including a pupil, the image-pickup optical system including a second optical axis having a predetermined positional relationship with the first optical axis; detecting means for detecting a deviation amount between a pupil center position of the eye and a pupil position which the visual axis passes through by processing an image signal of the front image of the anterior segment; and angle calculating means for calculating an angle between a line of sight of the eye and the visual axis based on the detected deviation amount.