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VISUAL FIELD MEASURING METHOD, VISUAL FIELD MEASURING APPARATUS, AND OPTOTYPE NEW

外国特許コード F170009005
整理番号 (S2015-1988-N69)
掲載日 2017年3月29日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2016JP072647
国際公開番号 WO 2017022757
国際出願日 平成28年8月2日(2016.8.2)
国際公開日 平成29年2月9日(2017.2.9)
優先権データ
  • 特願2015-153722 (2015.8.3) JP
発明の名称 (英語) VISUAL FIELD MEASURING METHOD, VISUAL FIELD MEASURING APPARATUS, AND OPTOTYPE NEW
発明の概要(英語) [Problem] To provide a visual field measuring method and visual field measuring apparatus which are able to reduce the burden on a tested person and a testing technician, and to provide an optotype that enables minimum separable acuity obtained as a test result to coincide with a retinal resolution, and is suited to automatic measuring and the visual field measuring method and visual field measuring apparatus according to the present invention. [Solution] This method for measuring the visual field comprises: a reference optotype display step of causing a test optotype to be displayed at a reference position BP located in the center of a display unit 2; a reference input step of causing the tested person to provide an input of the fact that the tested person has recognized the test optotype displayed in the reference optotype display step; a peripheral optotype display step of causing a test optotype to be displayed at a position different from the reference position BP if the fact that the test optotype is recognized is inputted in the reference input step; and a peripheral input step of causing the tested person to provide an input of the fact that the tested person has recognized the test optotype displayed in the peripheral optotype display step. A reaction time from the displaying of the test optotype in the peripheral optotype display step to the input of the fact that the test optotype is recognized in the peripheral input step is measured.
特許請求の範囲(英語) [claim1]
1. Making inspection apparent mark in the indicatory department indicate consecutively, being the method of measuring range of vision,
The standard apparent mark indicatory process which makes inspection apparent mark in the standard position indicate which is provided on the center of the aforementioned indicatory department and,
The reference input process which makes the fact that the inspection apparent mark which is indicated with the said standard apparent mark indicatory process is recognized the subject input and,
When recognizing inspection apparent mark in the said reference input process is input, the peripheral vision mark indicatory process which makes inspection apparent mark in the position indicate where it differs from the aforementioned standard position and,
Around making the fact that the inspection apparent mark which is indicated with the said peripheral vision mark indicatory process is recognized the subject input input process and, we have,
Repeatedly to execute to the input process around the description above consecutively from the aforementioned standard apparent mark indicatory process, after inspection apparent mark being indicated in the aforementioned peripheral vision mark indicatory process until the subject inputs in the input process around the description above, reaction time is measured
The range of vision measurement method of featuring thing.
[claim2]
2. The inspection apparent mark which is indicated in the aforementioned standard apparent mark indicatory process, is the inspection apparent mark which inspects vision,
With the aforementioned standard apparent mark indicatory process, direction of the aforementioned inspection apparent mark is made to input into the subject
Range of vision measurement method of the claim 1 statement which features thing.
[claim3]
3. The inspection apparent mark which is indicated in the aforementioned peripheral vision mark indicatory process, is the inspection apparent mark which inspects vision,
With the aforementioned peripheral vision mark indicatory process, it has reached the point where direction of the aforementioned inspection apparent mark is made to input into the subject,
When the ratio where direction of the inspection apparent mark which is indicated in direction and the aforementioned peripheral vision mark indicatory process which the subject inputs in the input process around the description above becomes mismatch is above specified value,
Or,
When direction of the inspection apparent mark which is indicated in direction and the aforementioned peripheral vision mark indicatory process which the subject inputs in the input process around the description above agrees, when the aforementioned reaction time has been above specified time, position around the said is judged as the darkness point
The claim range of vision measurement method of 1 which features thing or 2 statements.
[claim4]
4. It designates the offset information of the inspection apparent mark which is indicated in the aforementioned peripheral vision mark indicatory process as the horizontal shaft and the graph which plots the aforementioned reaction time the aforementioned reaction time as a vertical axis closely resembling linear, it judges the darkness point the approximate line which can as a standard,
Range of vision measurement method of the claim 3 statement which features thing.
[claim5]
5. It forms the aforementioned approximate line, making use of the data which excludes darkness point candidacy,
The darkness point amount pantograph bounce which is parallel with the aforementioned approximate line on the basis of the aforementioned darkness point candidacy is calculated,
Those whose reaction time is slower than the aforementioned darkness point amount pantograph bounce are judged as the darkness point
Range of vision measurement method of the claim 4 statement which features thing.
[claim6]
6. The darkness point distinction line is calculated among the aforementioned darkness point candidacy, making use of the data which is categorized to the Mariotte blind spot
Range of vision measurement method of the claim 5 statement which features thing.
[claim7]
7. Indicating the inspection apparent mark which inspects vision where size differs to the aforementioned standard position, after inspection apparent mark being indicated, until the subject inputs the direction of inspection apparent mark, it measures reaction time,
Size of the inspection apparent mark which is used for range of vision inspection on the basis of the relationship between size and reaction time of inspection apparent mark is decided
The claim 1 which features thing or in either of 6 range of vision measurement method of statement.
[claim8]
8. The aforementioned inspection apparent mark, is ARO
The claim in either 1 which features thing or 7 range of vision measurement method of statement.
[claim9]
9. The indicatory department which indicates inspection apparent mark and,
The input section which makes the fact that the inspection apparent mark which is indicated in the said indicatory department is recognized the subject input and,
The position where the aforementioned inspection apparent mark is made to indicate in the aforementioned indicatory department and the indicatory control section which controls timing and, we have,
As for the said indicatory control section,
The standard apparent mark display function which makes inspection apparent mark in the standard position indicate in the aforementioned indicatory department and,
In the aforementioned indicatory department, around differing from the aforementioned standard position, the peripheral vision mark display function which makes inspection apparent mark in position indicate and,
On the basis of the signal from the aforementioned input section, the indicatory change function which changes the aforementioned standard apparent mark display function and the aforementioned peripheral vision mark display function and,
After making the aforementioned inspection apparent mark indicate with the aforementioned peripheral vision mark display function, until the subject inputs into the aforementioned input section, the reaction time measurement function which measures time and, it has
The range of vision measuring device which features thing.
[claim10]
10. The inspection apparent mark which is indicated in the standard position in the aforementioned indicatory department with the aforementioned standard apparent mark display function, is the inspection apparent mark which inspects vision,
As for the aforementioned input section,
It has become the constitution which makes the direction of the aforementioned inspection apparent mark the subject input who recognizes the inspection apparent mark which is indicated in the standard position in the aforementioned indicatory department with the aforementioned standard apparent mark display function,
The range of vision measuring device of the claim 10 statement which features thing.
[claim11]
11. The inspection apparent mark which is indicated in the standard position in the aforementioned indicatory department with the aforementioned peripheral vision mark display function, is the inspection apparent mark which inspects vision,
As for the aforementioned input section,
We have become the constitution which makes the direction of the aforementioned inspection apparent mark the subject input who recognizes the inspection apparent mark which is indicated in the standard position in the aforementioned indicatory department with the aforementioned peripheral vision mark display function,
As for the aforementioned indicatory control section,
We have possessed the darkness point judgment function which judges the darkness point on the basis of the input to the aforementioned input section,
As for the said darkness point judgment function,
When the ratio where direction of the inspection apparent mark which is indicated with the aforementioned peripheral vision mark display function which is indicated by direction and the aforementioned peripheral vision mark display function which are input into the aforementioned input section the occasion where inspection apparent mark is made to indicate in position around the description above becomes mismatch is above specified value,
Or,
When the direction which is input into the aforementioned input section the occasion where inspection apparent mark is made to indicate in position around the description above and direction of the inspection apparent mark which is indicated with the aforementioned peripheral vision mark display function agree, when the measuring time which was measured by the aforementioned reaction time measurement function is above specified time,
It has possessed the darkness point judgment function which judges the position around the description above as the darkness point
The claim the range of vision measuring device of 9 which features thing or 10 statements.
[claim12]
12. As for the aforementioned darkness point judgment function,
It designates the offset information of the inspection apparent mark which is indicated by the aforementioned peripheral vision mark display function as the horizontal shaft and the description above the graph which plots the reaction time which was measured closely resembling linear the aforementioned reaction time as a vertical axis, it possesses the function which judges the darkness point the approximate line which can as a standard,
The range of vision measuring device of the claim 11 statement which features thing.
[claim13]
13. As for the aforementioned darkness point judgment function,
Forming the aforementioned approximate line making use of the data which excludes darkness point candidacy, it calculates the darkness point amount pantograph bounce which is parallel with the aforementioned approximate line, on the basis of the aforementioned darkness point candidacy among the aforementioned darkness point candidacy, it possesses the function which judges those whose reaction time is slower than the aforementioned darkness point amount pantograph bounce as the darkness point
The range of vision measuring device of the claim 12 statement which features thing.
[claim14]
14. As for the aforementioned darkness point judgment function,
It possesses the function which calculates the darkness point distinction line among the aforementioned darkness point candidacy, making use of the data which is categorized to the Mariotte blind spot
The range of vision measuring device of the claim 13 statement which features thing.
[claim15]
15. As for the aforementioned indicatory control section,
We have the apparent mark size decisive function which decides the size of the inspection apparent mark which is indicated in the aforementioned standard position and the position around the description above,
As for the said apparent mark size decisive function,
Indicating the inspection apparent mark which inspects vision where size differs to the aforementioned standard position, after the said inspection apparent mark being indicated, until the subject inputs the direction of the said inspection apparent mark, the reaction time measurement function which measures reaction time and,
It has possessed the size decisive function which decides the size of the inspection apparent mark which is used for range of vision inspection on the basis of the relationship between reaction time and the size of the aforementioned inspection apparent mark which the said reaction time measurement function measured
The claim 9 which features thing or in either of 14 range of vision measuring device of statement.
[claim16]
16. The aforementioned inspection apparent mark, is ARO
The claim in either 9 which features thing or 15 the range of vision measuring device of statement.
[claim17]
17. Being the inspection apparent mark which is used for the inspection of the smallest separated threshold,
The parallel line of the pair which is provided mutually parallel and,
Connected wiring of the one which connects between the edges which oppose mutually in the parallel line of the said pair and, the empty we are formed,
The parallel line of the aforementioned pair is formed by the same length,
The aforementioned connected wiring to be provided, in order the parallel line of the aforementioned pair to cross,
In order line width of the parallel line of the aforementioned pair, width of the opening between the parallel lines of the aforementioned pair, and line width of the aforementioned connected wiring, to become all same lengths, it is formed
Vision inspection apparent mark which features thing.
[claim18]
18. As for the aforementioned inspection apparent mark,
In order for length of the parallel line of the aforementioned pair and distance between the peripheries of the parallel line of the aforementioned pair to become the same length, it is formed
Vision inspection apparent mark of the claim 17 statement which features thing.
[claim19]
19. Length of parallel line of the aforementioned pair and ratio of line width, 2:1-5: In order to become with 1, it is adjusted
The claim vision inspection apparent mark of 17 which features thing or 18 statements.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • EHIME UNIVERSITY
  • 発明者(英語)
  • KAWAHARA MINORU
国際特許分類(IPC)
指定国 (WO201722757)
National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KN KP KR KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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