TWI784777B - Method for detecting an eyeball and the related system - Google Patents

Abstract

The present invention provides a method for detecting an eyeball and the related system, in which an optical image sensing device is used for detection. Firstly, a light is emitted to a first position, a second position, and a third position of an eyeball at a first time and a second time, and then all reflection times of the light are obtained. A depth of the first position, a depth of the second position, and a depth of the third position are obtained by calculation of all reflection times using a processing element, and a first specific area and a second specific area are obtained according to the three depths. Finally, a deformation level of the eyeball is generated according to the ratio of the two specific areas. By such a way, the eyeball can’t be sunken using pulsed airflow during detection so that the discomfort for the eyeball detection and reduces and the detection accuracy increases.

Description

Method and system for detecting eyeballs

A method and system for detecting eyeballs, in particular to a method and system for non-contact eyeball detection.

The intraocular pressure of normal people is about 10-20 millimeters of mercury (mmHg), and the difference between the two eyes is less than 5mmHg. The maintenance of intraocular pressure mainly comes from the aqueous humor secreted by the ciliary body in the eyeball. Under normal circumstances, the generation and discharge of aqueous humor will maintain a dynamic balance. However, when the aqueous humor is produced too much or the discharge is blocked, it will Aqueous humor builds up in the eye and increases intraocular pressure.

Therefore, when the intraocular pressure rises, the eyes may start to have slight discomfort, soreness or rainbow phenomenon, and if it gradually becomes severe, there will be headache, eye swelling or nausea and vomiting. When the intraocular pressure is high, it will compress the optic nerve In the long run, it will cause optic nerve atrophy and disease, and then cause visual field defect, vision loss and other symptoms, which shows the importance of intraocular pressure control.

The most common way to measure intraocular pressure is the non-contact applanation intraocular tonometer (non-contact tonometer, NCT) measurement method, which uses gas pulse force to flatten the central area of the cornea with a diameter of 3.06 mm, so no anesthesia is required. Just place the head on the bracket and watch the light spot in the instrument. At this time, check After aiming at the patient's eye through the eyepiece of the non-contact applanation intraocular pressure meter, the firing button is pressed, and the pulsed airflow sent out can flatten the cornea. During this process, the surface of the cornea is deformed from the protrusion due to force. From flat to concave, and with the weakening of the force, gradually from concave to flat, and finally back to the original shape, by emitting infrared rays to detect the energy of the corneal reflected light, to infer the degree of corneal depression, different The curvature makes the reflection angle of infrared rays also vary. The time point when the instrument receives the strongest infrared signal is defined as the applanation point, and the air blowing pressure at the first applanation point is defined as the intraocular pressure. In this way, It can display the intraocular pressure value, usually after 2-3 consecutive times, take the average value.

Although the aforementioned non-contact applanation intraocular tonometer is called non-contact, it still needs to send out pulsed airflow to flatten the cornea. This action often makes patients blink unconsciously. Eye disease or other symptoms cause frequent blinking, so it is more difficult to measure the intraocular pressure in this way, and the present invention provides a method and system for detecting intraocular pressure, which uses optical image sensing The measuring device is used to measure the deformation of the eyeball only by the emitted light source, and then convert the intraocular pressure, which greatly improves the discomfort of conventional pulse airflow contacting the eyes and increases its accuracy.

The main purpose of the present invention is to provide a method for detecting the eyeball, which uses an optical image sensing device to emit light to the first position, the second position and the third position of the eyeball respectively, and receives the reflection time, and then performs calculation and processing The unit obtains the depth of the first position, the second position and the third position according to the reflection time, and calculates the surface area, and obtains the amount of eyeball deformation according to the proportional difference of the surface area, without the need to form a depression in the eyeball with pulse airflow, and improve accuracy.

In order to achieve the above object, one embodiment of the present invention discloses a method for detecting the eyeball, including the steps: an optical image sensing device emits a first light source to the eyeball at a first time A first position, emit a second light source to a second position of the eyeball, and emit a third light source to a third position, and receive a first reflection time of the first light source reflected at the first position , a second reflection time of the second light source reflected at the second position, and a third reflection time of the third light source reflected at the third position; the optical image sensing device emits at a second time a fourth light source to the first position of the eye, emit a fifth light source to the second position of the eye, and emit a sixth light source to the third position, and receive the first light reflected at the first position A fourth reflection time of the four light sources, a fifth reflection time of the fifth light source reflected at the second position, and a sixth reflection time of the sixth light source reflected at the third position; an arithmetic processing unit According to the first reflection time, the second reflection time and the third reflection time, a first depth corresponding to the first position, a second depth corresponding to the second position and a depth corresponding to the third position are obtained A third depth, and according to the fourth reflection time, the fifth reflection time and the sixth reflection time, obtain a fourth depth corresponding to the first position, a fifth depth corresponding to the second position and a sixth depth corresponding to the third position; the arithmetic processing unit generates a first surface area according to the first depth, the second depth and the third depth, and generates a first surface area according to the fourth depth and the fifth depth and the sixth depth to generate a second surface area; and the calculation processing unit compares the ratio of the first surface area to the second surface area to obtain a deformation amount.

Preferably, the first depth is the product of the first reflection time and a speed of light, the second depth is the product of the second reflection time and the speed of light, the third depth is the product of the third reflection time and the speed of light product, the fourth depth is the product of the fourth reflection time and the speed of light, the fifth depth is the product of the fifth reflection time and the speed of light, and the sixth depth is the product of the sixth reflection time and the speed of light .

Preferably, the arithmetic processing unit generates a first coordinate value corresponding to the first depth, a second coordinate value corresponding to the second depth, a third coordinate value corresponding to the third depth, and a third coordinate value corresponding to the third depth. Four depths are generated corresponding to one of the fourth coordinate values, and the fifth depth is generated corresponding to one of the fifth coordinates value, and the sixth depth generates a corresponding sixth coordinate value; the arithmetic processing unit obtains a first equation group according to the first coordinate value, the second coordinate value and the third coordinate value, and according to the first coordinate value The three coordinate values, the fourth coordinate value and the fifth coordinate value obtain a second equation group; the operation processing unit obtains a center coordinate value corresponding to the eyeball according to the first equation group and the second equation group; and the calculation processing unit performs calculation according to an algorithm, the center coordinate value, the first coordinate value, the second coordinate value and the third coordinate value to obtain the first surface area, and according to the algorithm, the center coordinate value value, the fourth coordinate value, the fifth coordinate value and the sixth coordinate value to obtain the second surface area.

Preferably, the first surface area is the projected area of the central coordinate value projected to the first coordinate value, the second coordinate value and the third coordinate value, and the second surface area is the projected area of the central coordinate value projected to the fourth Coordinate value, the projected area of the fifth coordinate value and the sixth coordinate value, the algorithm is surface integral to calculate the first surface area and the second surface area.

Preferably, the optical image sensing device is an infrared image sensor.

Another object of the present invention is to provide a system for detecting the eyeball, which uses an optical image sensing device to emit light to the first position, the second position and the third position of the eyeball respectively, and receives the reflection time, and then calculates The processing unit obtains the depths of the first position, the second position and the third position according to their reflection time, and calculates their surface area, and obtains the amount of eyeball deformation based on the ratio of the surface area, and further converts the intraocular pressure value according to the amount of eyeball deformation , to achieve a completely non-contact detection eye system.

In order to achieve the above object, another embodiment of the present invention discloses a system for detecting eyeballs, including: an optical image sensing device, used to emit a first light source to one of the eyeballs at a first time position, emit a second light source to a second position of the eyeball, and emit a third light source to a third position, and receive a first reflection time of the first light source reflected at the first position, at the The second reflection time of the second light source reflected at the second position, and the third light reflected at the third position a third reflection time of the source, and emit a fourth light source to the first position of the eyeball at a second time, emit a fifth light source to the second position of the eyeball, and emit a sixth light source to the eyeball a third position, and receive a fourth reflection time of the fourth light source reflected at the first position, a fifth reflection time of the fifth light source reflected at the second position, and a reflection time of the fifth light source reflected at the third position A sixth reflection time of the sixth light source; and an arithmetic processing unit, connected to the optical image sensing device for receiving the first reflection time, the second reflection time, the third reflection time, the fourth reflection time, reflection time, the fifth reflection time, and the sixth reflection time, and obtain a first depth corresponding to the first position, a second depth corresponding to the second position, and a depth corresponding to the third position through calculation. A third depth, a fourth depth corresponding to the first position, a fifth depth corresponding to the second position, and a sixth depth corresponding to the third position; wherein, the arithmetic processing unit is based on the first A depth, the second depth, and the third depth generate a first surface area, and generate a second surface area based on the fourth depth, the fifth depth, and the sixth depth, and generate a second surface area based on the first surface area and the According to the ratio of the second surface area, a deformation amount is obtained, and the deformation amount is converted into an intraocular pressure value of the eyeball.

Preferably, the first depth is the product of the first reflection time and a speed of light, the second depth is the product of the second reflection time and the speed of light, the third depth is the product of the third reflection time and the speed of light product, the fourth depth is the product of the fourth reflection time and the speed of light, the fifth depth is the product of the fifth reflection time and the speed of light, and the sixth depth is the product of the sixth reflection time and the speed of light .

Preferably, the arithmetic processing unit generates a first coordinate value corresponding to the first depth, a second coordinate value corresponding to the second depth, a third coordinate value corresponding to the third depth, and a third coordinate value corresponding to the third depth. Four depths are generated corresponding to a fourth coordinate value, the fifth depth is generated corresponding to a fifth coordinate value, and the sixth depth is generated corresponding to a sixth coordinate value, and according to the first coordinate value and the second coordinate value value and the third coordinate value, a first equation set is obtained, and a second equation set is obtained according to the third coordinate value, the fourth coordinate value and the fifth coordinate value, and through the first equation set and The second equation set obtains a center coordinate value corresponding to the eyeball, and the calculation processing unit performs calculation through an algorithm, the center coordinate value, the first coordinate value, the second coordinate value, and the third coordinate value, The first surface area is obtained, and calculation is performed according to the algorithm, the center coordinate value, the fourth coordinate value, the fifth coordinate value, and the sixth coordinate value to obtain the second surface area.

Preferably, the first surface area is the projected area of the central coordinate value projected to the first coordinate value, the second coordinate value and the third coordinate value, and the second surface area is the projected area of the central coordinate value projected to the fourth Coordinate value, the projected area of the fifth coordinate value and the sixth coordinate value, the algorithm is surface integral to calculate the first surface area and the second surface area.

Preferably, the optical image sensing device is an infrared image sensor.

The beneficial effect of the present invention is to use an optical image sensing device and a high-precision method to detect eyeballs, and obtain the first position, the second position, and the second position by calculating the reflection time of the reflected light source received at the first time and the second time through the calculation processing unit. The depths of the second position and the third position are then calculated based on the first surface area corresponding to the first time and the second surface area corresponding to the second time, and according to the ratio of the first surface area to the second surface area, Obtain the amount of deformation, and further convert the intraocular pressure value of the eyeball to realize non-contact eyeball detection, improve measurement accuracy, and have no discomfort in detection.

1: Optical image sensing device

2: Operation processing unit

C1: first coordinate value

C2: second coordinate value

C3: The third coordinate value

C4: The fourth coordinate value

C5: fifth coordinate value

C6: The sixth coordinate value

D1: first depth

D2: second depth

D3: third depth

D4: fourth depth

D5: fifth depth

D6: sixth depth

E: eyeball

L1: the first light source

L2: Second light source

L3: third light source

L4: The fourth light source

L5: fifth light source

L6: sixth light source

O: center coordinate value

P1: first position

P2: second position

P3: third position

S1: step

S3: step

S5: step

S7: step

S71: Steps

S73: step

S75: Steps

S77: step

S9: step

SA1: first surface area

SA2: second surface area

T1: the first time

T2: second time

Figure 1: It is a schematic diagram of the system action of one embodiment of the present invention; Figure 2A: It is a flow chart of the method of one embodiment of the present invention; and FIG. 2B: It is a partial method flow chart of an embodiment of the present invention.

The features and technical contents of the relevant patent applications of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings.

Please refer to FIG. 1, which is a schematic diagram of the system operation of an embodiment of the present invention. As shown in the figure, a system for detecting eyeballs according to the present invention includes: an optical image sensing device 1 and a computing processing unit 2 , wherein the optical image sensing device 1 is connected to the computing processing unit 2 with signals.

Please also refer to FIG. 2A , which is a flow chart of a method according to an embodiment of the present invention. As shown in the figure, a method for detecting eyeballs of the present invention includes the following steps.

Step S1: An optical image sensing device emits a first light source to a first position of the eyeball at a first time, emits a second light source to a second position of the eyeball, and emits a third light source to a a third position, and receive a first reflection time of the first light source reflected at the first position, a second reflection time of the second light source reflected at the second position, and a reflection time of the second light source reflected at the third position A third reflection time of the third light source; step S3: the optical image sensing device emits a fourth light source to the first position of the eyeball at a second time, emits a fifth light source to the first position of the eyeball Two positions, and emit a sixth light source to the third position, and receive a fourth reflection time of the fourth light source reflected at the first position, a fifth light source of the fifth light source reflected at the second position reflection time, and a sixth reflection time of the sixth light source reflected at the third position; step S5: an arithmetic processing unit obtains a corresponding A first depth at the first location corresponding to the second location A second depth and a third depth corresponding to the third position, and according to the fourth reflection time, the fifth reflection time and the sixth reflection time, obtain a fourth depth corresponding to the first position, A fifth depth corresponding to the second position and a sixth depth corresponding to the third position; step S7: the arithmetic processing unit generates a first depth, the second depth and the third depth according to the first depth a surface area, and generate a second surface area according to the fourth depth, the fifth depth, and the sixth depth; and step S9: the calculation processing unit obtains a deformation according to the ratio of the first surface area to the second surface area quantity.

As shown in step S1, in this embodiment, as shown in Figure 1, the optical image sensing device 1 emits the first light source L1 to the first position P1 of the eyeball E at the first time T1, and emits the second light source L2 to the first position P1 of the eyeball E. Two positions P2, and the third position P3 that emits the third light source L3 to the eyeball E, and receives the first reflection time of the first light source L1 reflected at the first position P1, and the second light source L2 reflected at the second position P2 The second reflection time, and the third reflection time of the third light source L3 reflected at the third position P3, wherein the optical image sensing device 1 is an infrared image sensor, and the first light source L1, the second light source L2 and the second light source L1 All three light sources L3 are infrared light with a wavelength between 760nm and 1mm.

As shown in step S3, which is similar to the previous step, the optical image sensing device 1 emits the fourth light source L4 to the first position P1 of the eyeball E at the second time T2, and emits the fifth light source L5 to the first position P1 of the eyeball E. The second position P2, and the third position P3 that emits the sixth light source L6 to the eyeball E, and receives the fourth reflection time of the fourth light source L4 reflected at the first position P1, and the fifth light source L5 reflected at the second position P2 The fifth reflection time, and the sixth reflection time of the sixth light source L6 reflected at the third position P3, wherein the optical image sensing device 1 is an infrared image sensor, and the fourth light source L4, the fifth light source L5 and the sixth light source L6 The six light sources L6 are all infrared light with a wavelength between 760nm and 1mm. The difference from the previous step is that the first time T1 is not equal to the first time T1. The second time T2 means that at different time points, the same light source is emitted at the first position P1, the second position P2 and the third position P3, and the reflection time of receiving the corresponding light source.

As shown in step S5, the arithmetic processing unit 2 obtains the first depth D1 corresponding to the first position P1 and the second depth corresponding to the second position P2 according to the obtained first reflection time, second reflection time and third reflection time. D2, and the third depth D3 corresponding to the third position P3, and according to the fourth reflection time, the fifth reflection time and the sixth reflection time, obtain the fourth depth D4 corresponding to the first position P1, and the third depth D4 corresponding to the second position P2 The fifth depth D5, and the sixth depth D6 corresponding to the third position P3, that is, the dotted line reflected in the first figure is the depth of each position, wherein, the speed of light refers to the speed of light in a vacuum, which is a physical constant , the exact value is 299,792,458m/s. In this embodiment, 3×108m/s is used as the calculation, but not limited thereto. The distance is the product of time and speed, so the first depth D1 is the product of the first reflection time and the speed of light, The second depth D2 is the product of the second reflection time and the speed of light, the third depth D3 is the product of the third reflection time and the speed of light, the fourth depth D4 is the product of the fourth reflection time and the speed of light, and the fifth depth D5 is the fifth reflection The product of time and the speed of light, and the sixth depth D6 is the product of the sixth reflection time and the speed of light.

As shown in step S7, the arithmetic processing unit generates the first surface area SA1 according to the first depth D1, the second depth D2 and the third depth D3, and generates the second surface area according to the fourth depth D4, the fifth depth D5 and the sixth depth D6 SA2, please refer to FIG. 2B, which is a partial flow chart of an embodiment of the present invention. In this step, the following steps are further included: Step S71: The calculation processing unit generates a corresponding first coordinate according to the first depth value, a second coordinate value corresponding to the second depth generation, a third coordinate value corresponding to the third depth generation, a fourth coordinate value corresponding to the fourth depth generation, and a first coordinate value corresponding to the fifth depth generation Five coordinate values, and a sixth coordinate value corresponding to the sixth depth generation; Step S73: The operation processing unit obtains a first equation group according to the first coordinate value, the second coordinate value and the third coordinate value, and obtains a first equation group according to the third coordinate value, the fourth coordinate value and the fifth coordinate value Coordinate value, obtain a second equation group; Step S75: The operation processing unit obtains a center coordinate value corresponding to the eyeball according to the first equation group and the second equation group; and Step S75: The operation processing unit obtains a center coordinate value according to a algorithm, the center coordinate value, the first coordinate value, the second coordinate value, and the third coordinate value to obtain the first surface area, and according to the algorithm, the center coordinate value, and the fourth coordinate value , the fifth coordinate value and the sixth coordinate value to obtain the second surface area.

As shown in step S71, the arithmetic processing unit 2 generates the first coordinate value C1 corresponding to the first depth D1, the second coordinate value C2 corresponding to the second depth D2, the third coordinate value C3 corresponding to the third depth D3, and the fourth depth D3. D4 generates a corresponding fourth coordinate value C4, the fifth depth D5 generates a corresponding fifth coordinate value C5, and the sixth depth D6 generates a corresponding sixth coordinate value C6. In this embodiment, it is assumed that the emitting light source is the origin (0 ,0,0), and then infer the above coordinate values to facilitate calculation, but not limited thereto.

As shown in step S73, the arithmetic processing unit 2 obtains the first equation group according to the first coordinate value C1, the second coordinate value C2 and the third coordinate value C3, and obtains the first equation group according to the fourth coordinate value C4, the fifth coordinate value C5 and the sixth coordinate value The coordinate value C6 obtains the second equation group. In this embodiment, the equation group is obtained by spherical trigonometry theory, but not limited thereto.

As shown in step S75, the calculation processing unit 2 obtains the center coordinate value O of the eyeball E according to the first equation group and the second equation group. In this embodiment, following the previous step, the center coordinate value is deduced according to the theory of spherical trigonometry O, and the arc length of any side in the spherical triangle can be further calculated, but not limited to this.

As shown in step S77, the arithmetic processing unit 2 obtains the first surface area SA1 according to the algorithm, the center coordinate value O, the first coordinate value C1, the second coordinate value C2 and the third coordinate value C3, and according to the algorithm, the center coordinate value value O, the fourth coordinate value C4, the fifth coordinate value C5 and the sixth coordinate value C6 to obtain the second surface area SA2, wherein the first surface area is SA1 projected from the center coordinate value O to the first coordinate value C1 and the second coordinate value The projected area of C2 and the third coordinate value C3, the second surface area SA2 is the projected area of the center coordinate value O projected to the fourth coordinate value C4, the fifth coordinate value C5 and the sixth coordinate value C6, and the algorithm is surface integral , to calculate the first surface area SA1 and the second surface area SA2, but not limited thereto.

As shown in step S9, the arithmetic processing unit 2 obtains the amount of deformation according to the ratio of the first surface area SA1 to the second surface area SA2, because the maintenance of the intraocular pressure of the eyeball E mainly comes from the secretion of the ciliary body in the eyeball E Aqueous humor, under normal circumstances, the production and discharge of aqueous humor will maintain a dynamic balance. However, when the aqueous humor is produced too much or the discharge is blocked, it will cause the accumulation of aqueous humor in the eye and increase the intraocular pressure. Therefore, when When the intraocular pressure is at a normal value, it has a certain proportion of deformation. On the contrary, if the intraocular pressure gradually increases, at this time, due to the obstruction of the discharge of aqueous humor, the proportion of its deformation will decrease accordingly. At this time , in another embodiment, the amount of deformation can also be converted into a relative intraocular pressure value.

To sum up, the method and system for detecting the eyeball of the present invention can directly detect the condition of the eyeball by using an optical image sensing device, and use an arithmetic processing unit to perform further calculations, so as to obtain the amount of eyeball deformation completely without contact , and finally the amount of deformation can be converted through the calculation processing unit to obtain the intraocular pressure value, which greatly reduces the discomfort of detection and improves its accuracy, so the purpose of the present invention can indeed be achieved.

But the above-mentioned ones are only preferred embodiments of the present invention, and should not limit the implementation scope of the present invention, that is, any simple equivalent changes and modifications made according to the scope of the patent application for the present invention and the contents of the description of the invention, All still belong to the scope covered by the patent of the present invention.

1: Optical image sensing device

2: Operation processing unit

C1: first coordinate value

C2: second coordinate value

C3: The third coordinate value

C4: The fourth coordinate value

C5: fifth coordinate value

C6: The sixth coordinate value

D1: first depth

D2: second depth

D3: third depth

D4: fourth depth

D5: fifth depth

D6: sixth depth

E: eyeball

L1: the first light source

L2: Second light source

L3: third light source

L4: The fourth light source

L5: fifth light source

L6: sixth light source

O: center coordinate value

P1: first position

P2: second position

P3: third position

SA1: first surface area

SA2: second surface area

T1: the first time

T2: second time

Claims (10)

A method for detecting eyeballs, comprising steps: an optical image sensing device emits a first light source to a first position of the eyeball at a first time, emits a second light source to a second position of the eyeball, and emitting a third light source to a third position, and receiving a first reflection time of the first light source reflected at the first position and a second reflection time of the second light source reflected at the second position, And a third reflection time of the third light source reflected at the third position; the optical image sensing device emits a fourth light source to the first position of the eyeball at a second time, and emits a fifth light source to the eyeball at a second time. The second position of the eyeball, and emit a sixth light source to the third position, and receive the fourth reflection time of the fourth light source reflected at the first position, and the fifth light source reflected at the second position a fifth reflection time of the light source, and a sixth reflection time of the sixth light source reflected at the third position; an arithmetic processing unit according to the first reflection time, the second reflection time and the third reflection time, Obtain a first depth corresponding to the first position, a second depth corresponding to the second position, and a third depth corresponding to the third position, and according to the fourth reflection time and the fifth reflection time and the sixth reflection time, obtain a fourth depth corresponding to the first position, a fifth depth corresponding to the second position, and a sixth depth corresponding to the third position; the arithmetic processing unit according to the A first surface area is generated from the first depth, the second depth, and the third depth, and a second surface area is generated according to the fourth depth, the fifth depth, and the sixth depth; and the arithmetic processing unit generates a second surface area according to the The ratio of the first surface area to the second surface area obtains a deformation amount. According to the method for detecting eyeballs described in claim 1, a first depth corresponding to the first position is obtained in an arithmetic processing unit according to the first reflection time, the second reflection time and the third reflection time , a second depth corresponding to the second position and a third depth corresponding to the third position, and according to the fourth reflection time, the fifth reflection time and the sixth reflection time, obtain the In the steps of a fourth depth at a position, a fifth depth corresponding to the second position, and a sixth depth corresponding to the third position, the first depth is the product of the first reflection time and a speed of light , the second depth is the product of the second reflection time and the speed of light, the third depth is the product of the third reflection time and the speed of light, the fourth depth is the product of the fourth reflection time and the speed of light, the The fifth depth is the product of the fifth reflection time and the speed of light, and the sixth depth is the product of the sixth reflection time and the speed of light. According to the method for detecting eyeballs described in Claim 1, a first surface area is generated in the calculation processing unit according to the first depth, the second depth and the third depth, and according to the fourth depth, the first The fifth depth and the sixth depth, in the step of generating a second surface area, further include the step of: the arithmetic processing unit generates a corresponding first coordinate value according to the first depth, and a corresponding second coordinate value is generated by the second depth value, the third depth generation corresponds to a third coordinate value, the fourth depth generation corresponds to a fourth coordinate value, the fifth depth generation corresponds to a fifth coordinate value, and the sixth depth generation corresponds to a The sixth coordinate value; the arithmetic processing unit obtains a first equation group according to the first coordinate value, the second coordinate value and the third coordinate value, and obtains a first equation group according to the third coordinate value, the fourth coordinate value and the The fifth coordinate value obtains a second equation group; the arithmetic processing unit obtains a center coordinate value corresponding to the eyeball according to the first equation group and the second equation group; and The operation processing unit performs calculation according to an algorithm, the center coordinate value, the first coordinate value, the second coordinate value and the third coordinate value to obtain the first surface area, and according to the algorithm, the center coordinate value , the fourth coordinate value, the fifth coordinate value and the sixth coordinate value to obtain the second surface area. According to the method for detecting eyeballs described in claim 3, a first surface area is generated in the calculation processing unit according to the first depth, the second depth and the third depth, and according to the fourth depth, the first The fifth depth and the sixth depth, in the step of generating a second surface area, the first surface area is the projected area of the center coordinate value projected to the first coordinate value, the second coordinate value and the third coordinate value, the The second surface area is the projected area of the center coordinate value projected to the fourth coordinate value, the fifth coordinate value and the sixth coordinate value, and the algorithm is surface integral to calculate the first surface area and the second surface area. According to the method for detecting eyeballs described in Claim 1, wherein the optical image sensing device is an infrared image sensor. A system for detecting eyeballs, comprising: an optical image sensing device for emitting a first light source to a first position of the eyeball at a first time, emitting a second light source to a second position of the eyeball position, and emit a third light source to a third position, and receive a first reflection time of the first light source reflected at the first position, and a second reflection time of the second light source reflected at the second position time, and a third reflection time of the third light source reflected at the third position, and a fourth light source is emitted to the first position of the eyeball at a second time, and a fifth light source is emitted to the eyeball at a second time The second position, and a fourth reflection time of emitting a sixth light source to the third position and receiving the fourth light source reflected at the first position, at the a fifth reflection time of the fifth light source reflected at the second position, and a sixth reflection time of the sixth light source reflected at the third position; and an arithmetic processing unit connected to the optical image sensing device for signal, Used to receive the first reflection time, the second reflection time, the third reflection time, the fourth reflection time, the fifth reflection time and the sixth reflection time, and obtain the corresponding to the first position through calculation A first depth, a second depth corresponding to the second position, a third depth corresponding to the third position, a fourth depth corresponding to the first position, a first depth corresponding to the second position Five depths and a sixth depth corresponding to the third position; wherein, the arithmetic processing unit generates a first surface area according to the first depth, the second depth and the third depth, and generates a first surface area according to the fourth depth, The fifth depth and the sixth depth generate a second surface area, and obtain a deformation amount according to the ratio of the first surface area to the second surface area, and convert the deformation amount into an intraocular pressure value of the eyeball. According to the system for detecting eyeballs described in Claim 6, wherein the first depth is the product of the first reflection time and a speed of light, the second depth is the product of the second reflection time and the speed of light, and the second depth is the product of the second reflection time and the speed of light. The third depth is the product of the third reflection time and the speed of light, the fourth depth is the product of the fourth reflection time and the speed of light, the fifth depth is the product of the fifth reflection time and the speed of light, and the sixth depth is the product of the fifth reflection time and the speed of light. The depth is the product of the sixth reflection time and the speed of light. According to the system for detecting eyeballs described in Claim 6, wherein the arithmetic processing unit generates a corresponding first coordinate value according to the first depth, generates a corresponding second coordinate value according to the second depth, and generates a corresponding second coordinate value according to the third depth. The depth generation corresponds to a third coordinate value, the fourth depth generation corresponds to a fourth coordinate value, the fifth depth generation corresponds to a fifth coordinate value, and the sixth depth generation corresponds to a sixth coordinate value, and according to the first coordinate value, the second coordinate value and the third coordinate value, a first equation system is obtained, And according to the third coordinate value, the fourth coordinate value and the fifth coordinate value, obtain a second equation group, and obtain a center coordinate value corresponding to the eyeball through the first equation group and the second equation group , the calculation processing unit performs calculations through an algorithm, the center coordinate value, the first coordinate value, the second coordinate value and the third coordinate value to obtain the first surface area, and according to the algorithm, the center coordinate value value, the fourth coordinate value, the fifth coordinate value and the sixth coordinate value to obtain the second surface area. According to the system for detecting eyeballs described in Claim 8, wherein the first surface area is the projected area of the center coordinate value projected to the first coordinate value, the second coordinate value and the third coordinate value, the first The second surface area is the projected area of the center coordinate value projected to the fourth coordinate value, the fifth coordinate value and the sixth coordinate value, and the algorithm is surface integral to calculate the first surface area and the second surface area. According to the system for detecting eyeballs described in Claim 6, wherein the optical image sensing device is an infrared image sensor.

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