Title:
OPHTHALMOLOGIC MEASURING DEVICE
Document Type and Number:
Japanese Patent JP2016220860
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an ophthalmologic measuring device for acquiring information on a cornea rear face of an eye to be examined with a simple configuration.SOLUTION: An ophthalmologic measuring device 1 includes: a projection optical system 10 for projecting an index toward the cornea of an eye E to be examined; an imaging optical system 20 for capturing a first Purkinje image and a second Purkinje image by the index projected on the cornea by the projection optical system 10 with an imaging device 27; a fixation optical system 50 having an internal fixation index provided in a device body that can guide a visual axial direction of the eye E to be examined to a direction inclined with respect to an imaging optical axis L1; and a control unit 100 for acquiring information on a cornea rear face of the eye E to be examined based on the second Purkinje image captured by the imaging device 27. The fixation optical system 50 is used to separate the first Purkinje image and the second Purkinje image, and acquire information on the cornea rear face based on the separated second Purkinje image.SELECTED DRAWING: Figure 1
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Inventors:
HACHIYA MASANORI
TAKII MICHIHIRO
TAKII MICHIHIRO
Application Number:
JP2015109212A
Publication Date:
December 28, 2016
Filing Date:
May 28, 2015
Export Citation:
Assignee:
NIDEK KK
International Classes:
A61B3/107; A61B3/10
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