Title:
VISUAL FIELD TEST DEVICE, METHOD OF CONTROLLING SAME, AND VISUAL FIELD TEST PROGRAM
Document Type and Number:
WIPO Patent Application WO/2019/181517
Kind Code:
A1
Abstract:
Provided are a visual field test device, a method of controlling the same, and a visual field test program which are capable of reducing the time required for a visual field test and obtaining accurate test values. The present invention provides the visual field test device which includes: a first probability density function acquisition unit that performs a step (1) of acquiring a probability density function f(x1) for a result value x1 that is acquired by a first visual field test; a stimulation threshold determination unit that performs a step (2) of setting a stimulation threshold t1 from the range of x1 such that the probability density of the probability density function f(x1) is divided; a test result acquisition unit that performs a step (3) of acquiring a test result of whether a result of t1 or more can be acquired at the first visual field test; a second probability density function acquisition unit that performs a step (4) of acquiring a probability density function f(x2) which is obtained by subtracting a probability density of t1 or more or less than t1 from the probability density function f(x1); and a determination unit that performs a step (5) of determining whether a state is reached in which a standard deviation σ of the probability density function f(x2) is less than a predetermined value. The present invention also provides the method of controlling the same, and the visual field test program.
Inventors:
INOUE SATOSHI (JP)
KIMURA SHINJI (JP)
YAMANAKA KENZO (JP)
KIMURA SHINJI (JP)
YAMANAKA KENZO (JP)
Application Number:
PCT/JP2019/008928
Publication Date:
September 26, 2019
Filing Date:
March 06, 2019
Export Citation:
Assignee:
CREWT MED SYS INC (JP)
International Classes:
A61B3/024
Foreign References:
| JPH08508435A | 1996-09-10 | |||
| JP2016220832A | 2016-12-28 | |||
| JP2014166250A | 2014-09-11 |
Other References:
TURPIN, ANDREW ET AL.: "Properties of Perimetric Threshold Estimates from Full Threshold, ZEST, and SITA-like Strategies , as Determined by Computer Simulation", INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE, vol. 44, November 2003 (2003-11-01), pages 4787 - 4795, XP055636248
TURPIN, ANDREW ET AL.: "Development of Efficient Threshold Strategies for Frequency Doubling Technology Perimetry Using Computer Simulation", INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE, vol. 43, February 2002 (2002-02-01), pages 322 - 331, XP55636255
TURPIN, ANDREW ET AL.: "Development of Efficient Threshold Strategies for Frequency Doubling Technology Perimetry Using Computer Simulation", INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE, vol. 43, February 2002 (2002-02-01), pages 322 - 331, XP55636255
Attorney, Agent or Firm:
ANIYA Setuo et al. (JP)
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