Title:
OCULAR REFRACTIVITY MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/050233
Kind Code:
A1
Abstract:
Provided is an ocular refractivity measuring device capable of solving at least one problem in the conventional art with regard to measuring ocular refractivity while a refraction correcting mechanism is worn. An ocular refractivity measuring device according to the present disclosure is provided with: a measurement optical system for measuring the ocular refractivity of an eye to be inspected; a visual target presentation optical system for presenting a visual target to the eye to be inspected via a correction optical system provided on the device main body side; and a control means for controlling the ocular refractivity measuring device, wherein the control means implements: an over-refraction mode for measuring an over-refraction value which is a refractivity value in a worn state of a refractivity correction instrument; and a comparison mode for comparing how the visual target appears to a person to be inspected when in a corrected state, in which the correction optical system is controlled, and the visual target is corrected on the basis of the over-reaction value, and when in a non-corrected state, in which additional correction is not performed on the worn state by the correction optical system, by switching between the states.
Inventors:
TAKII MICHIHIRO (JP)
OMORI YUTAKA (JP)
OMORI YUTAKA (JP)
Application Number:
PCT/JP2019/034495
Publication Date:
March 12, 2020
Filing Date:
September 02, 2019
Export Citation:
Assignee:
NIDEK KK (JP)
International Classes:
A61B3/103
Domestic Patent References:
| WO2019111788A1 | 2019-06-13 |
Foreign References:
| JP2018038498A | 2018-03-15 | |||
| JP2015223518A | 2015-12-14 |
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