| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ophthalmic device with which an alignment error can be obtained even when alignment in the Z-direction is not accurately carried out, and a cornea form is corrected to obtain the accurate cornea form based on the error. <P>SOLUTION: A calculation controller 203 of this ophthalmic device calculates the alignment error in the Z-direction from ratios of diameters of ring reflection images of multiple rings Ca to Ci and intervals of at least a pair of mark reflection images projected to the cornea from a point at infinity. When the alignment error is within a prescribed range, a cornea form obtained from the ring reflection image is corrected using the alignment error. <P>COPYRIGHT: (C)2004,JPO |
