JP2007021085A - Vision recovery training device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an eyesight recovery training device capable of improving the efficiency of training.
A display unit 21 that displays an image for visual acuity training, a camera 4 that captures an eye 51 of a trainee 5, an analysis unit that analyzes the orientation of the eye 51 of the trainee 5 from an image captured by the camera 4 A message transmission unit that transmits a message to the trainer 5, and the message transmission unit is determined from the analysis result of the analysis unit that the trainer 5 is not gazing at the vision training image on the display unit 21. The message is transmitted to the trainer 5.
[Selection] Figure 1

Description

  The present invention relates to a vision recovery training apparatus that trains an imaging adjustment function of an eye.

  The decrease in visual acuity is thought to be due to a decrease in the imaging function of the eye due to the accommodation tension and weakness of the eye's regulatory muscles (the ciliary muscles). You can expect. In this method, the ciliary muscle is activated by training, and the perspective adjustment function is activated to restore the visual acuity.

  In view of this, a visual acuity recovery device that attempts to improve the visual acuity recovery effect by activating the function of the control muscle has been proposed (see, for example, Patent Document 1). This visual acuity recovery device reciprocates a gaze plate on which a mark is displayed to bring the mark close to or away from the user. When the user of the apparatus gazes at the mark, the focus of the eye moves continuously between the short distance and the long distance, so that the accommodation muscle is efficiently trained.

  There has also been proposed a vision recovery training device that can confirm whether or not the direction of the trainee's eyeball follows the movement of the target (see, for example, Patent Document 2). This visual acuity recovery training device moves the visual target in a direction substantially perpendicular to the optical axis direction of the eyepiece optical system, detects whether the eyeball follows the movement of the visual target, and the eyeball of the trainee can be seen. It is determined whether or not the target can be followed, and the number of times the target can be followed is displayed simultaneously with the end of the training.

International Publication No. 2004/066900 Pamphlet JP-A-8-257079

  However, in the visual acuity recovery device as described above, a trainee must watch the mark. However, when a child or the like performs training, there is a problem that it is difficult to keep watching the mark.

  Also, in the above-mentioned visual acuity recovery training device, it is not known until the end of the training whether or not the target can be followed, so once training is performed until the end, if the result is not followed, the training must be performed again, the efficiency not good.

  This invention is made | formed in view of the said situation, Comprising: It aims at providing the visual acuity recovery training apparatus which can improve the efficiency of training.

  A visual acuity recovery training device according to the present invention is a visual acuity recovery training device that trains an imaging adjustment function of an eye, a display unit that displays an image for visual acuity training, a camera that captures the eyes of a trainee, and the camera An analysis unit that analyzes the direction of the trainee's eyes from an image captured by the imager, and a message transmission unit that transmits a message to the trainee, wherein the message transmission unit is based on the analysis result of the analysis unit. When it is determined that the trainee is not gazing at the display unit, a message is transmitted to the trainee.

  Conventionally, even after completing the training, there was a case where the training effect was not improved because the display unit was not closely watched, and it was necessary to perform the training again. Since it is possible to recognize that the display unit is not being watched, it is possible to perform training while gazing at the display unit with certainty, and the efficiency of training can be improved.

  The visual acuity recovery training apparatus according to the present invention includes a movement control unit that changes an optical distance between the eye position of the trainee and the position of the display unit, and the vision training image is the training according to the optical distance. A display control unit that changes a display size of the vision training image so as to be projected onto the retina of the person's eye at a certain size.

  According to the above configuration, the size of the graphic image formed on the retina is constant, so that the regulatory muscle can be efficiently trained.

  In the visual acuity recovery training apparatus according to the present invention, the camera is an infrared camera.

  According to the above configuration, since the infrared camera has a high ability to detect the pupils of the trainee, it is possible to accurately detect the orientation of the trainee's eyes.

  In the visual acuity recovery training device according to the present invention, the message transmission unit transmits the message by voice.

  According to the above configuration, it is possible to urge attention to watch the vision training image without interrupting the training.

Furthermore, in the visual acuity recovery training device according to the present invention, the message transmission unit transmits the message by displaying characters on the display unit.

  According to the above configuration, it is possible to call attention even in an environment with noise.

  According to the present invention, since the trainee can recognize that he / she is not gazing at the display unit during the training, it becomes possible to perform the training while gazing at the display unit with certainty, thereby improving the efficiency of the training. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a schematic configuration of a vision recovery training device according to an embodiment of the present invention. This visual acuity recovery training apparatus includes in a housing 1 a display means 2 for displaying an image for visual acuity training, a moving means 3 for moving the display means 2, and a camera 4 for photographing an eye 51 of a trainee 5. Yes.

  The case 1 is provided with an eyepiece 11 for the trainee 5 to gaze at the image for visual acuity training on the display unit 21 of the display means 2, and has the same height as the visual axis A of the eye 51 of the trainee 5. The display means 2 is fixed to the belt 31 of the moving means 3 so that the vision training image is located at this position, and the visual axis A and the vision training image intersect substantially perpendicularly. The moving unit 3 includes a belt 31, a motor 32 that rotates the belt 31, and a pulley 33, and the display unit 2 moves in the direction of the visual axis A via the belt 31 by driving the motor 32.

  The display unit 21 of the display unit 2 includes, for example, a liquid crystal display panel having a backlight on the back, and displays a vision training image having a predetermined shape and size based on a control signal from a display control unit described later. The display unit 21 is not limited to a liquid crystal display panel, and various display devices such as a CRT display and an organic EL display panel in which an organic EL element is formed on a substrate can be used. Since the organic EL display panel emits light by itself, no illumination light is required, and the size and weight can be reduced.

  The camera 4 is an infrared camera. Since the infrared camera has a high ability to detect the pupil of the trainee 5, it is possible to accurately detect the orientation of the eye 51 of the trainee 5.

  FIG. 2 is a block diagram showing a schematic configuration of a control system of the above-described visual acuity recovery training apparatus. The control device shown in the figure changes the optical distance between the main control unit 61 that controls the operation of the entire vision recovery training device, and the position of the eye 51 of the trainee 5 and the position of the vision training image on the display unit 21. A movement control unit 62 and a display control unit that changes the display size of the vision training image so that the vision training image is projected on the retina of the eye 51 of the trainee 5 at a certain size according to the optical distance. 63, an operation unit 65, an analysis unit 65 that analyzes the orientation of the eye 51 of the trainee 5 from an image captured by the camera 4, and a message transmission unit 66 that transmits a message to the trainer 5, The unit 66 includes a voice synthesis unit 661 and a speaker 662.

  The case 1 of the vision recovery training device configured as described above covers the entire case 1 except for the eyepiece part 11 so that external light does not enter. You can peek inside. Then, the eye 51 of the trainee 5 who is training is photographed by the camera 4 through the eyepiece unit 11, and the photographed image is transmitted to the analysis unit 65. The analysis unit 65 analyzes the orientation of the eye 51 of the trainee 5 based on the image from the camera 4 and determines whether the trainer 5 is gazing at the vision training image. The message transmission unit 66 transmits a message to the trainer 5 when it is determined from the analysis result of the analysis unit 65 that the trainer 5 is not gazing at the vision training image.

  According to the above configuration, the trainer 5 can recognize that he / she is not gazing at the vision training image on the display unit 21 during training, and can perform training while gazing at the vision training image without fail. , Can improve the efficiency of training. At this time, since the message transmission unit 66 transmits the message by voice, it is possible to urge attention to watch the vision training image without interrupting the training.

  The movement control unit 62 can change the optical distance between the position of the eye 51 of the trainee 5 and the vision training image on the display unit 21. In the present embodiment, the vision training image is placed on the retina of the eye 51 of the trainee 5 according to the optical distance between the position of the eye 51 of the trainee 5 and the position of the display unit 21 that displays the vision training image. The display size of the vision training image is changed so that the image is projected at a certain size. Further, the display size of the vision training image is changed in proportion to the optical distance between the position of the eye 51 of the trainee 5 and the position of the display unit 21.

  Here, the main control unit 61 controls the movement control unit 62 and the display control unit 63 based on an instruction from the operation unit 64. The movement control unit 62 controls the movement of the display unit 2 by outputting a drive signal for the motor 32. At that time, information corresponding to the setting of the operation unit 64 is acquired from the main control unit 61, and the movement range and movement speed of the display means 2 are controlled. The movement of the display means 2 may be performed continuously or intermittently. When performed intermittently, the vision training image does not move for a predetermined time.

  The display control unit 63 drives the display unit 21 to display a training image having a predetermined shape and size. At that time, a training image having a size proportional to the optical distance between the position of the eye 51 of the trainee 5 and the display unit 21 is displayed. Information regarding the optical distance between the position of the eye 51 of the trainee 5 and the display unit 21 is acquired from the main control unit 61. Data for displaying a training image having a size proportional to the optical distance between the position of the eye 51 of the trainee 5 and the display unit 21 may be calculated each time, or previously stored data is read out. May be sent to the display unit 21.

  The operation unit 64 is operated by the trainer 5 to set an operation mode or the like of the visual acuity recovery training apparatus. For example, the moving range and moving speed of the display unit 2 are set, and the type of image for visual acuity training is set. I do. The image of the eye 51 of the trainee 5 during training, which is photographed by the camera 4, is sent to the analysis unit 65, and it is determined whether or not the trainer 5 is gazing at the vision training image. When the trainee 5 is not gazing at the vision training image, a signal is sent to the main control unit 61. When the main control unit 61 receives a signal from the analysis unit 65, it sends a signal to the speech synthesis unit 661. When the voice synthesizer 661 receives the signal, the voice synthesizer 661 synthesizes a message so that the trainee 5 gazes at the vision training image, and transmits it to the trainer 5 from the speaker 662 by voice.

  Thus, when performing a visual acuity recovery training, the trainer 5 looks into the interior from the eyepiece 11 of the housing 1 and gazes at an image for visual acuity training displayed on the display unit 21. Since the display position of the vision training image changes according to the movement of the display means 2, the trainer 5 sees the vision training image whose display position changes. At this time, if the trainee 5 is not gazing at the vision training image, the message flows from the speaker 662 so as to gamble at the vision training image, so the trainer 5 is gazing at the vision training image. . Therefore, it is possible to reliably carry out vision recovery training.

  In the above description, the message is transmitted by voice so as to watch the vision training image. However, the message may be displayed on the display unit 21. In this case, it is possible to call attention even under noisy environments.

  The present invention can recognize that the trainee is not gazing at the display unit during training, so that it is possible to perform the training while gazing at the display unit with certainty, thereby improving the efficiency of the training. It is useful for a visual acuity recovery training apparatus or the like that has an effect that can be achieved and that trains the imaging adjustment function of the eye.

The figure which shows schematic structure of the visual acuity recovery training apparatus of embodiment of this invention. The block diagram which shows schematic structure of the control system of the visual acuity recovery training apparatus of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 Display means 3 Movement means 4 Camera 5 Trainer 11 Eyepiece part 21 Display part 31 Belt 32 Motor 33 Pulley 61 Main control part 62 Movement control part 63 Display control part 64 Operation part 65 Analysis part 66 Message transmission part 661 Speech synthesis unit 662 Speaker

Claims (5)

A vision recovery training device that trains the imaging adjustment function of the eye,
A display unit for displaying a vision training image;
A camera that shoots the eyes of the trainee,
An analysis unit that analyzes the eyes of the trainee from an image captured by the camera;
A message transmission unit for transmitting a message to the trainee,
The message recovery unit is a vision recovery training device that transmits a message to the trainee when it is determined from the analysis result of the analysis unit that the trainee is not gazing at the display unit. The vision recovery training device according to claim 1,
A movement control unit that changes an optical distance between the eye position of the trainee and the position of the display unit;
A display control unit that changes a display size of the vision training image according to the optical distance so that the vision training image is projected on the retina of the eye of the trainer with a certain size;
A vision recovery training device comprising: The vision recovery training device according to claim 1 or 2,
The vision recovery training device, wherein the camera is an infrared camera. A vision recovery training device according to any one of claims 1 to 3,
The message transmission unit is a vision recovery training device that transmits the message by voice. A vision recovery training device according to any one of claims 1 to 3,
The said message transmission part is a visual acuity recovery training apparatus which transmits the said message by displaying a character on the said display part.

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