Title:
VISUAL FUNCTION MEASUREMENT DEVICE AND VISUAL FUNCTION MEASUREMENT PROGRAM
Document Type and Number:
WIPO Patent Application WO/2017/002846
Kind Code:
A1
Abstract:
The technical problem of the present invention is to provide a visual function measurement device that allows for the appropriate confirmation of effects of prescription eyeglasses or the like. This visual function measurement device is characterized by comprising: a measurement optical system that projects a measuring light onto the fundus of eyes to be examined and measures the refractive power of the eyes to be examined on the basis of reflected light from the fundus; a fixation target presenting optical system that, with respect to the eyes to be examined, allows for changing the presentation position of a fixation target to be presented to the eyes to be examined; a correction means that drives a correction optical system and that corrects the eye refractive power of the eyes to be examined; and a control means that calculates accommodative constriction parameters of the eyes to be examined from changes over time of the refractive power of the eyes which is measured by the measurement optical system, the control means acquiring the strength information of the eyeglasses a subject wears, changing the correction state of the eyes to be examined by controlling the correction means on the basis of the strength information, and calculating the accommodative restriction parameters of the eyes to be examined in the correction state based on the strength information.
Inventors:
HANAKI MIWAKO (JP)
HIRAMATSU HIROYUKI (JP)
HIRAMATSU HIROYUKI (JP)
Application Number:
PCT/JP2016/069253
Publication Date:
January 05, 2017
Filing Date:
June 29, 2016
Export Citation:
Assignee:
NIDEK KK (JP)
International Classes:
A61B3/103; A61B3/10
Foreign References:
| JP2011156291A | 2011-08-18 | |||
| JP2005052249A | 2005-03-03 | |||
| JP2003010158A | 2003-01-14 | |||
| JPH10500130A | 1998-01-06 | |||
| JP2005021181A | 2005-01-27 | |||
| JP2015012963A | 2015-01-22 |
Other References:
NANAMI NAKAYAMA ET AL.: "Influence of Over Refractive Correction on Diurnal Variation in Accommodative Microfluctuations", JOURNAL OF THE EYE, vol. 25, no. 2, 29 February 2008 (2008-02-29), pages 259 - 261
KUMIKO TOSHIDA ET AL.: "Influences of the Accommodative Stimulus and Aging on the Accommodative Microfluctuations", OPTOMETRY & VISION SCIENCE, vol. 75, no. 3, 31 March 1998 (1998-03-31), pages 221 - 226, XP055343440
KUMIKO TOSHIDA ET AL.: "Influences of the Accommodative Stimulus and Aging on the Accommodative Microfluctuations", OPTOMETRY & VISION SCIENCE, vol. 75, no. 3, 31 March 1998 (1998-03-31), pages 221 - 226, XP055343440
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