CN114052649A - Alternate covering strabismus diagnosis method based on virtual reality and eye movement tracking technology - Google Patents
Alternate covering strabismus diagnosis method based on virtual reality and eye movement tracking technology Download PDFInfo
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- CN114052649A CN114052649A CN202111440730.XA CN202111440730A CN114052649A CN 114052649 A CN114052649 A CN 114052649A CN 202111440730 A CN202111440730 A CN 202111440730A CN 114052649 A CN114052649 A CN 114052649A
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- 230000004424 eye movement Effects 0.000 title claims abstract description 30
- 208000004350 Strabismus Diseases 0.000 title claims abstract description 26
- 238000003745 diagnosis Methods 0.000 title claims abstract description 20
- 238000005516 engineering process Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title abstract description 19
- 230000000007 visual effect Effects 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 210000001747 pupil Anatomy 0.000 claims abstract description 9
- 238000010586 diagram Methods 0.000 claims description 5
- 238000002405 diagnostic procedure Methods 0.000 claims 3
- 238000001514 detection method Methods 0.000 abstract description 9
- 230000004927 fusion Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003759 clinical diagnosis Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/08—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing binocular or stereoscopic vision, e.g. strabismus
- A61B3/085—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing binocular or stereoscopic vision, e.g. strabismus for testing strabismus
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0016—Operational features thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0091—Fixation targets for viewing direction
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Abstract
The invention discloses an alternate covering strabismus diagnosis method based on virtual reality and eye movement tracking technology, which comprises the following steps: s1 building alternate covering virtual reality scenes; s2 alternately covering and measuring, the eye movement tracking device respectively obtains the pupil position coordinates of the two eyes of the measured person and the position coordinates of the fixation point in the virtual three-dimensional space, a table is generated by using the pupil position coordinates of the two eyes of the measured person and the position coordinates of the fixation point in the virtual three-dimensional space, and then an eye movement track image is formed through the table. The alternative covering strabismus diagnosis method can solve the problems that the traditional detection process is complicated and time-consuming, so that the measurement process is simple and convenient, a tested person is attracted to test in a virtual reality mode, the alternative covering and breaking of binocular fusion can be realized, the alternative covering and detection at any distance can be realized, reliable eye movement data can be obtained to generate an eye movement track image, and the purpose of providing auxiliary and visual criteria for strabismus diagnosis is achieved.
Description
Technical Field
The invention relates to the technical field of strabismus diagnosis, virtual reality and eye movement tracking, in particular to an alternate covering strabismus diagnosis method based on virtual reality and eye movement tracking technology.
Background
At present, clinical diagnosis of strabismus mainly depends on doctors in related fields to use tools such as point light sources and lenses. On one hand, the traditional test flow has higher requirements on professional quality and experience of testers, and the test result is greatly influenced by subjective factors of the testers; on the other hand, the detection process often requires a better fit of the subject, which is a great challenge for the diagnosis and treatment of strabismus in children. In addition, the traditional detection process is tedious and time-consuming, and particularly under the condition that the number of relevant doctors and patients in China is relatively unbalanced, the detection speed cannot well meet the requirements of the patients.
The virtual reality technology can provide a three-dimensional virtual environment generated by computer simulation, has the characteristic of enabling people to be personally on the scene, and can perform visual and auditory interaction with a user. The eye movement tracking technology can capture eye movement through an infrared camera and acquire information such as sight line direction and the like.
Disclosure of Invention
In view of the above technical problems in the related art, the present invention provides an alternative hiding strabismus diagnosis method based on virtual reality and eye movement tracking technologies, which can overcome the above disadvantages in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
an alternate covering strabismus diagnosis method based on virtual reality and eye movement tracking technology comprises the following steps:
s1, constructing alternate covering virtual reality scenes:
s11, constructing a virtual reality scene, wherein a target object is arranged in the scene and is positioned at a fixed distance right in front of the visual field of the tested person;
s12, setting a first camera right opposite to the target object corresponding to the left eye and a second camera opposite to the black object corresponding to the right eye, wherein the first camera and the second camera are in a pair to operate or close simultaneously, setting a third camera right opposite to the target object corresponding to the right eye and a fourth camera corresponding to the black object corresponding to the left eye, wherein the third camera and the fourth camera are in a pair to operate or close simultaneously, and realizing that the two pairs of cameras alternately operate for a fixed number of seconds at a fixed time through codes to realize that the target object in a virtual reality scene is alternately covered;
s2 alternate covering measurement, generating an eye movement track diagram:
s21, the tested person keeps watching the target object, the target object appears alternately in the left eye visual field and the right eye visual field of the tested person by alternately operating the two pairs of cameras, and the eye movement tracking device respectively acquires the position coordinates of the pupils of the two eyes of the tested person and the position coordinates of the watching point in the virtual three-dimensional space;
s22 forms a table by using the position coordinates of the pupils of the two eyes of the tested person and the position coordinates of the fixation point in the virtual three-dimensional space, and then forms an eye movement track image through the table, thereby providing assistance and criterion for strabismus diagnosis.
Further, the distances of the target object directly in front of the field of view of the subject in S11 are 33cm and 6m, respectively, and two measurements are performed in S2.
Further, in S21, the subject keeps watching the target object for 15S.
The invention has the beneficial effects that: the alternative covering strabismus diagnosis method can solve the problems of complexity and time consumption of the traditional detection process, so that the measurement process is simple and convenient, the tested person is attracted to carry out the test in a virtual reality mode, the binocular fusion is broken through the alternative covering, the alternative covering detection at any distance can be realized, reliable eye movement data are obtained, an eye movement track image is generated, and the purposes of providing assistance and visual criteria for strabismus diagnosis are achieved.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of an alternate hiding strabismus diagnosis method based on virtual reality and eye tracking technology according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
As shown in fig. 1, the method for diagnosing an alternate hiding strabismus based on virtual reality and eye tracking technology according to an embodiment of the present invention includes the following steps:
s1, constructing alternate covering virtual reality scenes:
s11, constructing a virtual reality scene, wherein a target object is arranged in the scene and is positioned at a fixed distance right in front of the visual field of the tested person;
s12, setting a first camera right opposite to the target object corresponding to the left eye and a second camera opposite to the black object corresponding to the right eye, wherein the first camera and the second camera are in a pair to operate or close simultaneously, setting a third camera right opposite to the target object corresponding to the right eye and a fourth camera corresponding to the black object corresponding to the left eye, wherein the third camera and the fourth camera are in a pair to operate or close simultaneously, and realizing that the two pairs of cameras alternately operate for a fixed number of seconds at a fixed time through codes to realize that the target object in a virtual reality scene is alternately covered;
s2 alternate covering measurement, generating an eye movement track diagram:
s21, the tested person keeps watching the target object, the target object appears alternately in the left eye visual field and the right eye visual field of the tested person by alternately operating the two pairs of cameras, and the eye movement tracking device respectively acquires the position coordinates of the pupils of the two eyes of the tested person and the position coordinates of the watching point in the virtual three-dimensional space;
s22 forms a table by using the position coordinates of the pupils of the two eyes of the tested person and the position coordinates of the fixation point in the virtual three-dimensional space, and then forms an eye movement track image through the table, thereby providing assistance and criterion for strabismus diagnosis.
The distances of the target object directly in front of the field of view of the subject in S11 are 33cm and 6m, respectively, and two measurements are performed in S2.
In S21, the time period during which the subject keeps watching the target object is 15 seconds.
In order to facilitate understanding of the above-described technical aspects of the present invention, the above-described technical aspects of the present invention will be described in detail below in terms of specific usage.
In specific use, a squint patient wears a VR helmet, performs eye tracking calibration, then begins squint diagnosis, in the process of diagnosis, a patient needs to always watch a target object in a virtual reality scene, a doctor controls the distance from the target object to human eyes, firstly, the doctor controls the distance from the target object to the human eyes by pressing keys to be 6m, the patient keeps a state of watching the target object for 15s, then a doctor presses keys to regulate and control the distance between the target object and the human eyes to be 33cm, the patient keeps the state of gazing the target object for 15s, the eye movement tracking equipment respectively acquires the pupil position coordinates of the two eyes of the tested person and the position coordinates of the gazing point in the virtual three-dimensional space, the software automatically generates a table recorded with the eye movement data of the tested person, and (4) selecting required data in the table to generate an eye movement track diagram, thereby completing the auxiliary diagnosis of the strabismus and the strabismus type and the acquisition of the criterion.
In conclusion, by means of the technical scheme, the problems that the traditional detection process is complicated and time-consuming can be solved, so that the purposes that the measurement process is simple and convenient, the tested person is attracted to carry out the test in a virtual reality mode, the binocular fusion is broken through alternate covering and breaking, the alternate covering detection at any distance can be realized, reliable eye movement data are obtained to generate an eye movement track image, and assistance and visual criteria are provided for strabismus diagnosis are achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. An alternate hiding strabismus diagnostic method based on virtual reality and eye movement tracking technology is characterized by comprising the following steps:
s1, constructing alternate covering virtual reality scenes:
s11, constructing a virtual reality scene, wherein a target object is arranged in the scene and is positioned at a fixed distance right in front of the visual field of the tested person;
s12, setting a first camera right opposite to the target object corresponding to the left eye and a second camera opposite to the black object corresponding to the right eye, wherein the first camera and the second camera are in a pair to operate or close simultaneously, setting a third camera right opposite to the target object corresponding to the right eye and a fourth camera corresponding to the black object corresponding to the left eye, wherein the third camera and the fourth camera are in a pair to operate or close simultaneously, and realizing that the two pairs of cameras alternately operate for a fixed number of seconds at a fixed time through codes to realize that the target object in a virtual reality scene is alternately covered;
s2 alternate covering measurement, generating an eye movement track diagram:
s21, the tested person keeps watching the target object, the target object appears alternately in the left eye visual field and the right eye visual field of the tested person by alternately operating the two pairs of cameras, and the eye movement tracking device respectively acquires the position coordinates of the pupils of the two eyes of the tested person and the position coordinates of the watching point in the virtual three-dimensional space;
s22 forms a table by using the position coordinates of the pupils of the two eyes of the tested person and the position coordinates of the fixation point in the virtual three-dimensional space, and then forms an eye movement track image through the table, thereby providing assistance and criterion for strabismus diagnosis.
2. The alternating hiding strabismus diagnostic method of claim 1, wherein the distances of the target object directly in front of the subject' S field of view in S11 are 33cm and 6m, respectively, and the measurement is performed twice in S2.
3. The alternating hiding strabismus diagnostic method of claim 1, wherein the subject remains focused on the target object for 15S in S21.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116027910A (en) * | 2023-03-29 | 2023-04-28 | 广州视景医疗软件有限公司 | Eye bitmap generation method and system based on VR eye movement tracking technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116027910A (en) * | 2023-03-29 | 2023-04-28 | 广州视景医疗软件有限公司 | Eye bitmap generation method and system based on VR eye movement tracking technology |
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