Human eye strabismus direction and strabismus degree measurement device

A measuring device and technology of the human eye, which can be used in the fields of eye testing equipment, medical science, diagnosis, etc., and can solve the problem of low reliability of strabismus measurement

Inactive Publication Date: 2020-10-27
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a device for measuring the direction of strabismus and the degree of strabismus of human eyes, which is

Method used

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  • Human eye strabismus direction and strabismus degree measurement device
  • Human eye strabismus direction and strabismus degree measurement device
  • Human eye strabismus direction and strabismus degree measurement device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0039] A device for measuring the strabismus direction of human eyes, comprising: an eye tracker, a controller, a processor, and VR glasses projecting a virtual environment picture containing pointers. in,

[0040]The controller is used to control the movement of the pointer, so that the human eyes wearing VR glasses are in a natural state of gazing at the pointer; then turn off the left and right screens of the VR glasses alternately; the eye tracker is used to take pictures before and after each shutdown. The pupil photo of one side; the processor is used to determine whether the pupil position of the human eye on this side has moved and the direction of movement based on the pupil photos before and after closing corresponding to each side. Move in the opposite direction.

[0041] It should be noted that in the virtual environment, there are two virtual cameras, and the images captured by the two cameras will be respectively projected on the left and right eye images of the...

Embodiment 2

[0058] A device for measuring the degree of strabismus of human eyes, such as image 3 As shown, a human eye strabismus direction measurement device as described in the first embodiment is included to measure the strabismus eye and the strabismus direction. in,

[0059] The controller in the device for measuring the direction of strabismus of human eyes is also used to close the virtual picture of the dominant eye when the human eye is in the natural gaze state to the target indicator, and simultaneously the eye tracker and the processing device in the device for measuring the direction of strabismus of human eyes With the help of the strabismic eye, the virtual screen of the strabismus eye is rotated according to the direction of the strabismus eye, so that the target indicator in the virtual screen is located in the direction of the pupil of the strabismus eye, ensuring that the main function is turned off when the human eye is in the natural state of gazing at the target in...

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Abstract

The invention belongs to the field of strabismus measurement devices, and particularly relates to a human eye strabismus direction and strabismus degree measurement device. The device comprises an eyetracker, a controller, a processor and VR glasses; the controller is used for controlling an indicator to move, so that human eyes wearing the VR glasses are in a natural staring state on the indicator in the glasses; then left and right side pictures of the VR glasses are alternately closed; the eye tracker is used for shooting pupil pictures of the closed side before and after each closing; andthe processor is used for judging whether the pupil of the human eye on each side moves or not and determining the moving direction based on the pupil pictures, corresponding to the side, before andafter closing. In addition, the controller also closes a main eye picture when the human eyes are in the natural staring state on the target indicator, and meanwhile rotates a strabismus eye picture according to the strabismus direction, so that the target indicator is located in the direction where the pupil of a strabismus eye faces, and the total rotation angle is the strabismus degree. The device is not affected by subjectivity of a subject, the staring degree and the cooperation degree are high, and the measurement result is reliable.

Description

technical field [0001] The invention belongs to the field of human eye strabismus measurement devices, and more particularly relates to a human eye strabismus direction and strabismus degree measurement device. Background technique [0002] Strabismus is a disorder of the extraocular muscles in which both eyes cannot focus on a target at the same time. The alternating cover inspection system using a prism has been the gold standard for ophthalmologists to measure strabismus angle clinically. The working essence of the triangular prism alternately covering system is: refract the light entering the human eye through the triangular prism, and alternately cover both eyes, after confirming that both eyes are looking at the same target, the refraction angle of the prism corresponds to the degree of strabismus of the patient. In clinical practice, there are two obvious deficiencies in the alternate prism covering method. One is that it is difficult for the doctor to ensure that th...

Claims

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Application Information

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IPC IPC(8): A61B3/08A61B3/113
CPCA61B3/0041A61B3/005A61B3/085A61B3/113
Inventor 王天江冯琪岳志诚张钧陶
Owner HUAZHONG UNIV OF SCI & TECH
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