Patent ID: 8330808

Claim:
An ophthalmic photographing apparatus arranged to obtain an image of an examinee's eye, the apparatus comprising: a photographing unit comprising a projection optical system comprising a light source and a scanner arranged to change a reflection direction of light, and arranged to scan a given portion of the eye in X- and Y-directions with at least a part of the light emitted from the light source defining measurement light, and a photo-receiving optical system comprising one or more photodetectors and arranged to make the measurement light reflected from the given portion of the eye enter the one or more photodetectors; a photographing control unit arranged to control operation of the photographing unit to scan the given portion a plurality of times in a given scanning region and obtain a plurality of pieces of image information based on a signal from the one or more photodetectors; and an image information processing unit arranged to (a) divide the scanning region in the X- and Y-directions of each of the plurality of pieces of image information into a plurality of regions and obtain information on a positional deviation between the plurality of pieces of image information for each of the divided regions, (b) obtain image information for each of the divided regions, in each of which the positional deviation has been corrected, with reference to one of the plurality of pieces of image information based on the obtained positional deviation information, and (c) add and average the plurality of pieces of image information for each of their corresponding divided regions to obtain one piece of image information.