CN112914500B - Artificial eye simulation device suitable for infant eye tracker calibration detection - Google Patents
Artificial eye simulation device suitable for infant eye tracker calibration detection Download PDFInfo
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- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/113—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining or recording eye movement
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Abstract
The invention discloses an artificial eye simulation device suitable for calibration and detection of an infant eye tracker, which comprises a left artificial eyeball and a right artificial eyeball; a left and a right universal rotary tables; the left translation module, the right translation module and the video display module; the left artificial eyeball and the right artificial eyeball both comprise a hollow eyeball body, a polyethylene film iris body and a miniature camera, wherein the polyethylene film iris body covers the eyeball body; the cornea reflection characteristics of human eyeballs can be simulated really by adopting the polyethylene film to simulate the cornea; meanwhile, the left universal rotary table and the right universal rotary table are controlled according to images collected by the miniature camera to simulate the dynamic capturing function of eyeballs, and the distance between the eyeballs is changed through the left translation module and the right translation module; therefore, the real effect of human eyes in the calibration work of the eye tracker can be simulated, and the problem that the calibration of the eye tracker cannot be completed by infants or children with partial eye diseases is solved.
Description
Technical Field
The invention relates to the technical field of ophthalmology diagnosis and treatment, in particular to an artificial eye simulation device suitable for calibration and detection of an infant eye tracker.
Background
The eye tracker is initially applied to basic psychological research, which studies human psychological activities by examining human eye movements and studies the relationship between eye movements and human psychological activities by analyzing recorded eye movement data. With the technical progress, the eye tracker can record rapidly changing eye movement data, including various measurement indexes such as a fixation position, fixation time, an eye jump direction, an eye jump distance, a pupil diameter and the like. The drawn eye movement track diagram intuitively and comprehensively reflects the space-time characteristics of the eye movement.
In addition to the above psychological applications, the eye tracker has been used in clinical studies of visual system, cognition, etc. gradually, for example, the eye tracker is used for training to assist the life of patients suffering from brain injury, cerebral palsy patients, and brainstem stroke, etc. In the beginning stage of ophthalmic clinical application, detection methods and adaptability research still need to be improved.
At present, the eye tracker adopts an advanced telemetering and non-invasive eye tracking mode, namely a pupil corneal reflex technology. The technical principle is that a light source is used for irradiating eyes to enable the eyes to generate obvious reflection, a camera is used for collecting and identifying eye images with reflection effects, and parameters such as eye motion vectors and the like are calculated through angle changes of corneas and pupils. Because the irritation of infrared rays to eyes is small, the existing eye tracker generally adopts an infrared ray light source, the eye sight of a detected person (patient) is level to a detection screen, the eye tracker is positioned between the eye tracker and the eye detector, the infrared ray emits continuous light to irradiate the eye area of the detected person, meanwhile, an infrared camera collects images, and a data processing computer stores and calculates data; the control screen is controlled by the operator to preset and monitor the process of the acquired images.
Before the standard eye movement detection program is carried out, the eye movement instrument calibration is needed, namely, the position calibration between the eyeball and the detection screen is carried out, and the calibration provides a standard for quantitative calculation for subsequent detection results. For adults or children of the right age (over 3 years old), the calibration process is easy to complete, and for infants under 3 years old or children with partial eye diseases (such as strabismus), the calibration cannot be completed, and the subsequent eye movement detection procedure cannot be performed. Many default calibration programs of the eye tracker cannot be deleted or bypassed, and even if the calibration programs can be deleted, the subsequent detection results cannot be quantified, so that the problem is limited to eye detection analysis of infants under the age of 3.
Disclosure of Invention
The invention aims to overcome the technical defects, provides an artificial eye simulation device suitable for the calibration and detection of an infant eye tracker, and solves the problem that the existing infant or children with partial eye diseases cannot finish the calibration of the eye tracker.
In order to achieve the above technical object, the present invention provides an artificial eye simulation device suitable for calibration and detection of an infant eye tracker, comprising:
the artificial eyeball comprises a left artificial eyeball and a right artificial eyeball, wherein the left artificial eyeball and the right artificial eyeball respectively comprise a hollow eyeball body, a polyethylene film iris body and a miniature camera, a tangent plane is arranged on the spherical surface of the eyeball body, a light absorption film is pasted on the tangent plane and is provided with a simulated pupil, the polyethylene film iris body covers the tangent plane, the miniature camera is fixedly arranged in the hollow cavity of the eyeball body, and the camera and the simulated pupil are arranged on the same central axis of the eyeball body;
the left universal rotary table and the right universal rotary table are respectively arranged at the central positions of the left artificial eyeball and the right artificial eyeball and respectively control the left artificial eyeball and the right artificial eyeball to rotate in a universal manner;
the left and right translation modules are respectively arranged on the left and right translation modules, and the left and right translation modules are used for respectively controlling the left and right movements of the left and right artificial eyeballs so as to adjust the distance between the left and right artificial eyeballs;
the control terminal comprises a video display module in communication connection with the miniature camera; and the rotation control module is electrically connected with the left universal turntable and the right universal turntable.
Preferably, the eyeball body is a hemisphere with a hollow inner cavity, the tangent plane is arranged at the position of the spherical surface relative to the central axis of the tangent plane, and the central axis of the eyeball body passes through the center of the tangent plane.
Preferably, the polyethylene film iris has a diameter corresponding to the diameter of the eyeball and complementary to the eyeball.
Preferably, the polyethylene film iris body is also provided with a visual small hole, the simulated pupil and the camera are all positioned on the same central axis of the eyeball body, and the diameter of the visual small hole is smaller than that of the simulated pupil.
Preferably, the inner wall of the cavity of the eyeball body is also pasted with a light absorption film.
Preferably, the left translation module and the right translation module are sleeved on a translation base and can freely move left and right on the translation base respectively.
Preferably, the left universal rotary table comprises a left horizontal steering module for controlling the horizontal rotation of the left artificial eyeball and a left vertical steering module for controlling the vertical rotation of the left artificial eyeball; the right universal rotary table comprises a right horizontal steering module for controlling the right artificial eyeball to horizontally rotate and a right vertical steering module for controlling the right artificial eyeball to vertically rotate.
Preferably, the rotation control module comprises a left horizontal control module electrically connected with the left horizontal steering module; the left vertical control module is electrically connected with the left vertical steering module; the right horizontal control module is electrically connected with the right horizontal steering module; the right vertical control module is electrically connected with the right vertical steering module; the horizontal cooperative control module is electrically connected with the left horizontal control module and the right horizontal steering module at the same time; and the vertical cooperative control module is electrically connected with the left vertical control module and the right vertical steering module at the same time.
Preferably, the artificial eye simulation device suitable for calibration and detection of the infant eye tracker further comprises a shielding cover, wherein the shielding cover is covered on the left artificial eyeball and the right artificial eyeball, and is provided with a left eye hole and a right eye hole which are matched with the left artificial eyeball and the right artificial eyeball in size and serve as windows of the left artificial eyeball and the right artificial eyeball.
Preferably, the shielding cover is provided with a flexible folding part between the left artificial eyeball and the right artificial eyeball.
Compared with the prior art, the cornea simulation device has the advantages that the polyethylene film with good light transmission is adopted to simulate the cornea, so that the uneven reflection effect can be shown on incident infrared rays, and the strong reflection area is formed near the pupil, so that the cornea reflection principle is realized, and the cornea reflection characteristic of human eyeballs can be really simulated; meanwhile, according to the image collected by the micro camera implanted into the artificial eyeball, the left universal rotary table and the right universal rotary table are controlled to capture the calibration light spots so as to simulate the dynamic capture function of the eyeball, and in addition, the left translation module and the right translation module are controlled to change the distance between the left artificial eyeball and the right artificial eyeball, so that the requirement on the interpupillary distance of infants and even adults can be met; therefore, the artificial eye simulation device can simulate the real effect of human eyes in the calibration work of the eye tracker, thereby solving the limitation of the calibration process, enabling the eye movement detection of infants to be possible, and creating conditions for the research and development of eye disease diagnosis, preoperative/postoperative comparison, treatment method determination and the like.
Drawings
Fig. 1 is a main structural schematic diagram of an artificial eye simulation device suitable for calibration and detection of an infant eye tracker according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an eye ball in the artificial eye simulation device suitable for calibration and detection of the infant eye tracker according to the embodiment of the present invention;
fig. 3 is a schematic structural diagram of the control structure of the left universal swivel for the eyeball of the left artificial eyeball according to the embodiment of the invention;
fig. 4 is a schematic structural diagram of a shield in the artificial eye simulation device suitable for calibration and detection of the infant eye tracker according to the embodiment of the present invention;
fig. 5 is a block control diagram of a control terminal of an artificial eye simulation device suitable for calibration and detection of an infant eye tracker according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
An embodiment of the present invention provides an artificial eye simulation device suitable for calibration and detection of an infant eye tracker, as shown in fig. 1 to 5, the artificial eye simulation device suitable for calibration and detection of an infant eye tracker, including: left and right artificial eyeballs 1 and 2; a left and a right universal rotary tables; left and right translation modules and a control terminal 7.
The left artificial eyeball 1 and the right artificial eyeball 2 both comprise a hollow eyeball body 101, a polyethylene film iris body 103 and a micro-camera 106; as shown in fig. 2, the eyeball body 101 is a hemisphere with a hollow inner cavity, a tangent plane 102 is arranged on the spherical surface of the eyeball body relative to the central axis thereof, and the central axis of the eyeball body 101 passes through the center of the tangent plane 102; the section 102 is covered with a light absorption film, and is provided with a simulated pupil 105, and the light absorption film is preferably made of black flannelette and can be used for simulating the black-brown effect of the iris. The polyethylene film iris body 103 covers the section 102 of the eyeball body 101, is hemispherical, has the diameter consistent with that of the eyeball body 101, and is mutually complemented with the eyeball body 101; the cornea is simulated by adopting the polyethylene film with good light transmission, so that the non-uniform reflection effect can be presented to incident infrared rays, bright light spots are formed near the pupil, the cornea reflection principle is realized, and the cornea reflection characteristic is determined. Further, a visual pinhole 104 is also formed on the polyethylene film iris body 103, and the visual pinhole 104, the simulated pupil 105 and the camera 107 are all located on the same central axis of the eyeball body 101, and the diameter of the visual pinhole 104 is smaller than that of the simulated pupil 105. The micro-camera 106 is fixedly arranged in the hollow cavity of the eyeball body 101, and the camera 107, the simulated pupil 105 and the visual small hole 104 are all arranged on the central axis of the eyeball body 101. Meanwhile, in order to prevent the reflection of light on the inner wall of the cavity of the eyeball body 101 from interfering with the image collected by the micro-camera 106, the inner wall of the cavity of the eyeball body 101 is also coated with a light absorption film, so that the absorption of the pupil to infrared rays is simulated.
The left and right universal turntables are respectively arranged at the central positions of the left and right artificial eyeballs 1 and 2 and respectively control the left and right artificial eyeballs 1 and 2 to rotate in a universal manner; the left universal rotary table comprises a left horizontal steering module for controlling the left artificial eyeball 1 to horizontally rotate and a left vertical steering module for controlling the left artificial eyeball 1 to vertically rotate; the right universal rotary table comprises a right horizontal steering module for controlling the right artificial eyeball 2 to horizontally rotate and a right vertical steering module for controlling the right artificial eyeball 2 to vertically rotate. As shown in fig. 3 in particular, a control end 11 is protruded from the central axis of the left artificial eyeball 1, the control end 11 is a ball universal head which is provided with a horizontal rotating wheel 13 and a vertical rotating wheel 12, the central axes of the horizontal rotating wheel 13 and the vertical rotating wheel 12 are vertically crossed, a horizontal power output wheel of a horizontal rotating motor 15 is connected with the horizontal rotating wheel 13 through a belt, the horizontal rotating motor 15 is driven by the power transmission of the belt pulley, the horizontal rotating wheel 13 controls the ball universal tripod head to drive the left artificial eyeball 1 to rotate in the horizontal direction, the vertical power output wheel of the vertical rotating motor 14 is connected with the vertical rotating wheel 12 by a belt, the vertical rotating motor 14 is controlled by the vertical rotating wheel 12 through the power transmission of the belt pulley, and the ball universal tripod head drives the left artificial eyeball 1 to rotate in the vertical direction.
The left artificial eyeball 1 and the right artificial eyeball 2 are respectively arranged on the left translation module and the right translation module, and the left and right translation modules respectively control the left artificial eyeball 1 and the right artificial eyeball 2 to move left and right to adjust the distance between the left artificial eyeball 1 and the right artificial eyeball 2; specifically, as shown in fig. 1, the artificial eye simulation device suitable for calibration and detection of an infant eye tracker comprises a translation base 3, a horizontal slide rail 31 is arranged on the translation base 3, a graduated scale 32 is arranged below the horizontal slide rail 31, the left and right translation modules are movably sleeved on the horizontal slide rail 31, the left and right artificial eyeballs 1 and 2 are fixedly arranged on the left and right slide blocks 4 and 5, the left and right artificial eyeballs 1 and 2 are respectively and freely moved left and right on the horizontal slide rail 31 through the left and right slide blocks 4 and 5, so that the distance between the left and right artificial eyeballs 1 and 2 can be adjusted according to the eye distance of a person to be detected, in addition, the left and right slide blocks 4 and 5 are respectively provided with left and right locking parts 41 and 51, and the left and right locking parts 41 and 51 are in threaded fit with each other along a direction perpendicular to the translation base 3 and pass through the left and right locking parts 41 and 51, And the right sliding blocks 4 and 5 are abutted against the translation base 3 to realize positioning and locking.
As shown in fig. 5, the control terminal 7 includes a video display module 71 communicatively connected to the micro camera 106; and a rotation control module 72 electrically connected to the left and right universal turntables. Specifically, the rotation control module 72 includes a left horizontal control module 721 electrically connected to the left horizontal steering module and configured to control the left artificial eyeball 1 to rotate horizontally; a left vertical control module 722 electrically connected to the left vertical steering module for controlling the left artificial eyeball 1 to vertically rotate; a right horizontal control module 723 electrically connected to the right horizontal steering module and configured to control the right artificial eyeball 2 to rotate horizontally; a right vertical control module 724 electrically connected to the right vertical steering module and configured to control the right artificial eyeball 2 to vertically rotate; and a horizontal cooperative control module 725 electrically connected to the left horizontal control module 721 and the right horizontal steering module at the same time, for controlling the left and right artificial eyeballs 1 and 2 to synchronously rotate horizontally; and a vertical cooperative control module 726, electrically connected to the left vertical control module 722 and the right vertical steering module, for controlling the left and right artificial eyeballs 1 and 2 to rotate vertically and synchronously.
In addition, the artificial eye simulation device suitable for the calibration and detection of the infant eye tracker further comprises a shielding cover, wherein the shielding cover is covered on the left artificial eyeball 1 and the right artificial eyeball 2, and is provided with a left eye hole and a right eye hole which are matched with the left artificial eyeball 1 and the right artificial eyeball 2 in size and serve as windows of the left artificial eyeball 1 and the right artificial eyeball 2. Since the distance between the left and right artificial eyeballs 1 and 2 is adjusted as required, the shielding cover is provided with a flexible folding portion between the left and right artificial eyeballs 1 and 2, and the flexible folding portion can be freely extended and retracted to adapt to the adjustment of the distance between the left and right artificial eyeballs 1 and 2, so as to increase the flexibility of the shielding cover, as shown in fig. 4. Meanwhile, the shielding cover can be made of leather, and the characteristic of skin heat absorption can be simulated.
When the infant needs to be calibrated by the eye tracker, firstly, the artificial eye simulation device suitable for the calibration and detection of the infant eye tracker is erected in front of the eye tracker, then the distance between the left artificial eyeball 1 and the right artificial eyeball 2 is adjusted to be the eye distance of the infant to be detected by the left translation module and the right translation module, then an eye tracker calibration program is started, and the left artificial eyeball 1 and the right artificial eyeball 2 are synchronously adjusted by the left universal rotary table and the right universal rotary table according to the scenes observed by the left artificial eyeball 1 and the right artificial eyeball 2 displayed by the video display module 71 until calibration light spots can be seen in the video display module 71; i.e., when a calibration point occurs, the left and right gimbaled turntables are adjusted by the horizontal cooperative control module 725 and the vertical cooperative control module 726. When the calibration light spot appears, the horizontal cooperative control module 725 and the vertical cooperative control module 726 are operated to observe the pupil position image of the left-eye screen, and when the target image is in the central position, the rotation is stopped. The right eye keeps the same movement, and the right eye screen does not need to be observed during control and is synchronous with the left side; when the eye tracker calibration program determines that the pupil position, the corneal reflection position and the error thereof meet the program design, the display is qualified, and the calibration of the next calibration point is carried out. And repeating the steps until the calibration is completed.
The artificial eye simulation device is taken down after the calibration work is finished, parents or medical personnel hold the sick child, the head of the sick child is placed on the head position limiting support, the eyeball position of the sick child is close to the position of the artificial eye as far as possible, and the distance is +/-5 cm. After the placement is finished, the eye tracker automatically detects the pupil position, corneal reflection and other conditions, and can execute the next detection procedure in a qualified state to acquire images and real eyeball motion data of the child patient.
When the patient has the situations of strabismus and the like, linkage control is not selected, the left artificial eyeball 1 is independently adjusted and controlled through the left horizontal control module 721 and the left vertical control module 722, the right artificial eyeball 2 is independently adjusted and controlled through the right horizontal control module 723 and the right vertical control module 724, the real situation of two eyes of the strabismus patient can be simulated through monocular control, and the limitation of an eye tracker is broken through.
The artificial eye simulation device suitable for the calibration and detection of the infant eye tracker has the advantages that the polyethylene film with good light transmittance is adopted to simulate the cornea, so that the uneven reflection effect can be presented to incident infrared rays, and a strong reflection area is formed near the pupil, so that the cornea reflection principle is realized, and the cornea reflection characteristics of human eyeballs can be simulated really; meanwhile, according to the image collected by the micro-camera 106 implanted in the artificial eyeball, the left universal rotating table and the right universal rotating table are controlled to capture the calibration light spots so as to simulate the dynamic capturing function of the eyeball, and in addition, the left translation module and the right translation module are controlled to change the distance between the left artificial eyeball 1 and the right artificial eyeball 2, so that the pupil distance requirements of infants and even adults can be met; therefore, the artificial eye simulation device can simulate the real effect of human eyes in the calibration work of the eye tracker, thereby solving the limitation of the calibration process, enabling the eye movement detection of infants to be possible, and creating conditions for the research and development of eye disease diagnosis, preoperative/postoperative comparison, treatment method determination and the like. The artificial eye simulation device provided by the invention can improve the calibration precision, shorten the calibration time, is more suitable for the characteristics of short attention and endurance of infants, and provides good conditions for infant detection.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art would appreciate that the modules, elements, and/or method steps of the various embodiments described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An artificial eye simulation device suitable for infant eye tracker calibration detection, comprising:
the artificial eyeball comprises a left artificial eyeball and a right artificial eyeball, wherein the left artificial eyeball and the right artificial eyeball respectively comprise a hollow eyeball body, a polyethylene film iris body and a miniature camera, a tangent plane is arranged on the spherical surface of the eyeball body, a light absorption film is pasted on the tangent plane and is provided with a simulated pupil, the polyethylene film iris body covers the tangent plane, the miniature camera is fixedly arranged in the hollow cavity of the eyeball body, and the camera and the simulated pupil are arranged on the same central axis of the eyeball body;
the left universal rotary table and the right universal rotary table are respectively arranged at the central positions of the left artificial eyeball and the right artificial eyeball and respectively control the left artificial eyeball and the right artificial eyeball to rotate in a universal manner;
the left and right translation modules are respectively arranged on the left and right translation modules, and the left and right translation modules are used for respectively controlling the left and right movements of the left and right artificial eyeballs so as to adjust the distance between the left and right artificial eyeballs;
the control terminal comprises a video display module in communication connection with the miniature camera; the rotation control module is electrically connected with the universal turntable;
when the infant eye tracker needs to be calibrated, firstly, the artificial eye simulation device suitable for the calibration and detection of the infant eye tracker is erected in front of the eye tracker, then the distance between the left artificial eyeball and the right artificial eyeball is adjusted to be the eye distance of the infant to be detected through the left translation module and the right translation module, then an eye tracker calibration program is started, and the left artificial eyeball and the right artificial eyeball are synchronously adjusted through the left universal rotary table and the right universal rotary table according to the scenes observed by the left artificial eyeball and the right artificial eyeball displayed by the video display module until a calibration light spot can be seen in the video display module; when the calibration point appears, the left universal rotary table and the right universal rotary table are adjusted through the rotation control module; when the calibration light spots appear, operating the rotation control module to observe the pupil position image of the left eye screen, and stopping rotating when the target image is in the central position; the right eye keeps the same movement, and the right eye screen does not need to be observed during control and is synchronous with the left side; when the eye tracker calibration program determines that the pupil position, the corneal reflection position and the error thereof meet the program design, displaying that the pupil position, the corneal reflection position and the error thereof are qualified, and calibrating the next calibration point; and repeating the steps until the calibration is completed.
2. The device of claim 1, wherein the eyeball body is a hemisphere with a hollow inner cavity, the section plane is arranged at the position of the spherical surface relative to the central axis of the eyeball body, and the central axis of the eyeball body passes through the center of the section plane.
3. The artificial eye simulator suitable for infant eye tracker calibration testing according to claim 1, wherein the polyethylene film iris body has a diameter corresponding to and complementary to the eyeball body.
4. The device of claim 1, wherein the polyethylene iris diaphragm is further provided with a visual aperture, the simulated pupil and the camera are located on the same central axis of the eye, and the diameter of the visual aperture is smaller than that of the simulated pupil.
5. The artificial eye simulator suitable for infant eye tracker calibration and detection as claimed in claim 1, wherein the inner wall of the cavity of the eyeball body is also coated with a light absorption film.
6. The artificial eye simulator suitable for infant eye tracker calibration and detection according to claim 1, wherein the left and right translation modules are both sleeved on a translation base and can move left and right freely on the translation base.
7. The artificial eye simulation device suitable for infant eye tracker calibration detection according to claim 1, wherein the left universal turntable comprises a left horizontal steering module for controlling the horizontal rotation of the left artificial eyeball and a left vertical steering module for controlling the vertical rotation of the left artificial eyeball; the right universal rotary table comprises a right horizontal steering module for controlling the right artificial eyeball to horizontally rotate and a right vertical steering module for controlling the right artificial eyeball to vertically rotate.
8. The artificial eye simulator suitable for infant eye tracker calibration testing according to claim 7, wherein the rotation control module comprises a left horizontal control module electrically connected to the left horizontal steering module; the left vertical control module is electrically connected with the left vertical steering module; the right horizontal control module is electrically connected with the right horizontal steering module; the right vertical control module is electrically connected with the right vertical steering module; the horizontal cooperative control module is electrically connected with the left horizontal control module and the right horizontal steering module at the same time; and the vertical cooperative control module is electrically connected with the left vertical control module and the right vertical steering module at the same time.
9. The device for simulating artificial eyes according to claim 1, further comprising a shielding cover covering the left and right artificial eyeballs and having a left and right eye hole with a size matching the left and right artificial eyeballs as a window for the left and right artificial eyeballs.
10. The device for simulating the alignment of an infant's eye tracker according to claim 9, wherein the shield comprises a flexible fold between the left and right artificial eyes.
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| CN113712539B (en) * | 2021-08-31 | 2023-11-14 | 刘宏图 | Intelligent healthy glasses for children |
| CN114569056B (en) * | 2022-01-28 | 2022-11-15 | 首都医科大学附属北京天坛医院 | Eyeball detection and vision simulation device and eyeball detection and vision simulation method |
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