KR102672334B1 - Medical device capable of simultaneously diagnosing blepharoptosis and strabismus symptoms and diagnosis method using the same - Google Patents

Abstract

A medical device capable of simultaneously examining symptoms of ptosis and strabismus according to the present invention includes an examination panel arranged vertically opposite a person's face, is electrically connected to the examination panel, measures ptosis, and determines strabismus symptoms. A medical device including a processor with a program installed thereon, wherein the examination panel includes: a camera provided to photograph the left eye, the right eye, and the entire face; a plurality of infrared LEDs that irradiate infrared rays to the pupil to detect the human pupil; a plurality of display LEDs arranged at regular intervals over the entire surface of the examination panel; and an LED controller that receives signals from the processor and controls the infrared LED and the display LED.

Description

Medical device capable of simultaneously diagnosing blepharoptosis and strabismus symptoms and diagnosis method using the same {Medical device capable of simultaneously diagnosing blepharoptosis and strabismus symptoms and diagnosis method using the same}

The present invention relates to a medical device that can simultaneously screen for ptosis and strabismus symptoms and a screening method using the same. Specifically, the distance from the eyelid to the pupil center for ptosis surgery (MRD1 and MRD2) and the vertical distance to the upper eyelid ( It relates to a medical device that automatically measures palpebral fissure width and at the same time automatically determines strabismus symptoms and a screening method using the same.

Oculoplastic surgery is one of the most frequently performed surgical procedures in Korea, and surgeries for eyelid diseases as well as cosmetic surgery are continuously increasing.

Ptosis refers to a phenomenon in which the upper eyelid droops downward, making the eyes appear small.

Symptoms of drooping eyelids can cause problems with vision development in children, and can also have a negative impact on emotions due to aesthetic problems.

In adults, it is not only a cosmetic problem, but in severe cases, the eyelids block the vision, making daily life frustrating, and sometimes headaches occur because the eyelids are lifted by the force of the frontalis muscle.

Currently, in clinical practice, when examining ptosis, the doctor holds a ruler in front of the eye and roughly measures both sides with the naked eye. However, this is not only inaccurate, but the head position is not fixed, so the head position changes each time the measurement is made, making consistent measurement difficult. There is a limit.

Accordingly, there is a need to develop a method that can objectively and accurately measure the condition of the eyelids in real time or a device that can objectively diagnose the condition.

Meanwhile, strabismus is a condition in which the two eyes are not aligned and look at different points. When one eye is looking straight ahead, the other eye moves inward or outward, or up or down, resulting in eye displacement. says

Among these strabismus symptoms, latent strabismus (intermittent strabismus or heterophoria) is a type of strabismus in which ocular displacement does not occur when gazing with both eyes at the same time, but occurs when fusion of the two eyes is prevented by blocking one eye.

In other words, in latent strabismus, eye displacement does not normally occur, but when fatigue occurs or a situation occurs in which the fusion of the two eyes is disturbed, eye displacement occurs and symptoms are complained of.

Therefore, since strabismus appears in various ways depending on various situations, it is important to accurately measure the degree of eye displacement according to the situation in order to accurately determine the symptoms of strabismus.

Accordingly, easier and more objective diagnostic equipment is needed to diagnose strabismus, but the need for development of strabismus diagnostic equipment is increasing because accurate diagnosis is difficult in most ophthalmology clinics without strabismus specialists, as well as general clinics and public health center examination centers. am.

Although there is currently a demand in the market, the development of strabismus diagnostic medical equipment is very important and necessary in order to promote globalization of the medical device market in an area that is not being developed worldwide.

KR 10-2022-0041431 A KR 10-2099223 B1

The present invention was developed to solve various conventional problems as described above, and automatically measures the distance from the eyelid to the pupil center (MRD1 and MRD2) and the vertical distance of the upper eyelid (palpebral fissure width) for ptosis surgery. At the same time, the purpose is to provide a medical device that can automatically determine the symptoms of strabismus and a screening method using it.

In order to achieve the above objectives, a medical device capable of simultaneously examining symptoms of ptosis and strabismus according to the first aspect of the present invention includes an examination panel arranged vertically opposite the person's face, and the examination panel It is a medical device that is electrically connected and includes a processor installed with a program for measuring ptosis and determining strabismus symptoms, wherein the examination panel includes: a camera provided to photograph the left eye, the right eye, and the entire face, respectively; a plurality of infrared LEDs that irradiate infrared rays to the pupil to detect the human pupil; a plurality of display LEDs arranged at regular intervals over the entire surface of the examination panel; and an LED controller that receives signals from the processor and controls the infrared LED and the display LED.

In another configuration, the present invention is a medical device comprising an examination panel arranged vertically opposite to a person's face, and a processor electrically connected to the examination panel and installed with a program for measuring ptosis and determining strabismus symptoms. As, the examination panel includes three cameras arranged side by side on a horizontal line in the middle of the examination panel to capture the left eye, right eye and the entire face, respectively; A plurality of infrared LEDs arranged in a straight line with the three cameras and irradiating infrared rays to the human eye to detect the human pupil; a plurality of display LEDs arranged at regular intervals over the entire surface of the examination panel; and an LED controller that receives signals from the processor and controls the infrared LED and the display LED. A medical device capable of simultaneously examining symptoms of ptosis and strabismus can be provided.

In another configuration, the present invention is a medical treatment comprising an examination panel arranged vertically opposite to a person's face, and a processor electrically connected to the examination panel and installed with a program for measuring ptosis and determining strabismus symptoms. An apparatus, wherein the examination panel includes three cameras arranged side by side on a horizontal line in the middle portion of the examination panel to image a left eye, a right eye and the entire face, respectively; A plurality of infrared LEDs arranged in a straight line with the three cameras and irradiating infrared rays to the human eye to detect the human pupil; a plurality of display LEDs arranged at regular intervals over the entire surface of the examination panel; and an LED controller that receives a signal from the processor and controls the infrared LED and the display LED, wherein the processor acquires data for each frame captured by the camera so that the face of the person is perpendicular to the camera. Simultaneously screen for symptoms of ptosis and strabismus, characterized by filtering to measure the distance between the pupil center and the eyelid border (Marginal Reflex Distance: MRD) and the upper eyelid vertical distance (palpebral fissure width) using only one case of data. Medical devices that can be used may also be provided.

Meanwhile, the examination method capable of simultaneously examining symptoms of ptosis and strabismus according to the second aspect of the present invention is a method of simultaneously examining symptoms of ptosis and strabismus using the above-described medical device, which transmits infrared rays to the human eye. A first step of detecting the pupil in an eye image captured by a camera by examining it; a second step of detecting the center of the pupil and then detecting the position of the upper or lower eyelid perpendicularly from the center of the pupil; Using an LED controller, the vertically arranged upper and lower display LEDs are alternately turned on and off among the display LEDs arranged on the examination panel, and the eyelids installed in the processor are activated according to the movement of the eyes of the person looking at the display LEDs. A third step of measuring the distance between the pupil center and the upper or lower eyelid border (Marginal Reflex Distance: MRD) through a lower eyelid measurement program; And a fourth step of determining strabismus symptoms through a strabismus symptom determination program installed in the processor according to the movement of the eyes of a person looking at a predetermined pattern indicated by lighting up the display LED disposed on the examination panel using an LED controller. It is characterized by

In another method, the present invention is a method of simultaneously examining symptoms of ptosis and strabismus using the above-described medical device, comprising: a first step of detecting the pupil in an eye image captured by a camera by irradiating infrared rays to a person's eye; a second step of detecting the center of the pupil and then detecting the position of the upper or lower eyelid perpendicularly from the center of the pupil; Using an LED controller, the vertically arranged upper and lower display LEDs are alternately turned on and off among the display LEDs arranged on the examination panel, and the eyelids installed in the processor are activated according to the movement of the eyes of the person looking at the display LEDs. A third step of measuring the distance between the pupil center and the upper or lower eyelid border (Marginal Reflex Distance: MRD) through a lower eyelid measurement program; And a fourth step of determining strabismus symptoms through a strabismus symptom determination program installed in the processor according to the movement of the eyes of a person looking at a predetermined pattern indicated by lighting up the display LED arranged on the examination panel using an LED controller. , the processor acquires data for every frame captured by the camera, and only has data when the person's face is perpendicular to the camera, and calculates the distance between the pupil center and the eyelid border (Marginal Reflex Distance: MRD) and the verticality of the upper eyelid. It is possible to provide a screening method that can simultaneously screen for symptoms of ptosis and strabismus, which is characterized by filtering to measure the distance (palpebral fissure width).

Details of other embodiments are included in “Specific Details for Carrying Out the Invention” and the accompanying “Drawings.”

The advantages and/or features of the present invention and methods for achieving them will become clear by referring to the various embodiments described in detail below along with the accompanying drawings.

However, the present invention is not limited to the configuration of each embodiment disclosed below, but may also be implemented in various different forms, and each embodiment disclosed in this specification serves to ensure that the disclosure of the present invention is complete. It is provided to fully inform those skilled in the art of the present invention of the scope of the present invention, and it should be noted that the present invention is only defined by the scope of each claim in the claims.

According to the solution to the above-described problem, the present invention has the following effects.

The present invention includes an examination panel equipped with a camera, a display LED, and an infrared LED, and a processor installed with a program to measure ptosis and determine strabismus symptoms, thereby determining the distance from the eyelid to the center of the pupil for ptosis surgery. It has the effect of automatically measuring (MRD1 and MRD2) and palpebral fissure width while automatically determining strabismus symptoms.

In addition, the present invention measures the distance between the pupil center and the eyelid border (Marginal Reflex Distance: MRD) using only the data when the processor acquires data for each frame captured by the camera and the person's face is perpendicular to the camera. By filtering, it is possible to make an accurate determination without having to separately prepare a device or device for fixing the person's face, and the size of a person's eyes that changes in real time can be measured relatively accurately.

Figure 1 is a diagram schematically showing the configuration of a medical device capable of simultaneously examining symptoms of ptosis and strabismus according to the present invention.
FIG. 2 is a diagram illustrating the medical device of FIG. 1 when viewed from the front, where a camera, a display LED, and an infrared LED are arranged.
Figure 3 is a photograph showing the distance from the eyelid to the pupil center (Marginal Reflex Distance: MRD) and the palpebral fissure vertical height (PFH, or palpebral fissure width).
Figure 4 is a photograph showing the output results of the MRD1 test using the medical device according to the present invention.
FIG. 5 is a photograph showing a reference object for calculating the actual distance corresponding to the MRD1 value measured in FIG. 4.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Before explaining the present invention in detail, the terms or words used in this specification should not be construed as unconditionally limited to their ordinary or dictionary meanings, and the inventor of the present invention should not use the terms and conditions to explain his invention in the best way. It should be noted that the concepts of various terms can be appropriately defined and used, and furthermore, that these terms and words should be interpreted with meanings and concepts consistent with the technical idea of the present invention.

That is, the terms used in this specification are only used to describe preferred embodiments of the present invention, and are not used with the intention of specifically limiting the content of the present invention, and these terms refer to various possibilities of the present invention. It is important to note that this is a term defined with consideration in mind.

In addition, in this specification, it should be noted that singular expressions may include plural expressions unless the context clearly indicates a different meaning, and that even if similarly expressed in plural, they may include singular meanings. do.

Throughout this specification, when a component is described as “including” another component, it does not exclude any other component, but includes any other component, unless specifically stated to the contrary. It could mean that you can do it.

Furthermore, when a component is described as being "installed within or connected to" another component, it means that this component may be installed in direct connection or contact with the other component and may be installed in contact with the other component and may be installed in contact with the other component. It may be installed at a certain distance, and in the case where it is installed at a certain distance, there may be a third component or means for fixing or connecting the component to another component. It should be noted that the description of the components or means of 3 may be omitted.

On the other hand, when a component is described as being “directly connected” or “directly connected” to another component, it should be understood that no third component or means is present.

Likewise, other expressions that describe the relationship between each component, such as "between" and "immediately between", or "neighboring" and "directly neighboring", have the same meaning. It should be interpreted as

In addition, in this specification, terms such as "one side", "other side", "one side", "the other side", "first", "second", etc., if used, refer to one component. It is used to clearly distinguish it from other components, and it should be noted that the meaning of the component is not limited by this term.

In addition, in this specification, terms related to position such as "top", "bottom", "left", "right", etc., if used, should be understood as indicating the relative position of the corresponding component in the corresponding drawing. Unless the absolute location is specified, these location-related terms should not be understood as referring to the absolute location.

Moreover, in the specification of the present invention, terms such as "...unit", "...unit", "module", "device", etc., if used, mean a unit capable of processing one or more functions or operations, which is hardware. Alternatively, it should be noted that it can be implemented through software, or a combination of hardware and software.

In addition, in this specification, when specifying the reference numeral for each component in each drawing, the same component has the same reference number even if the component is shown in different drawings, that is, the same reference is made throughout the specification. The symbols indicate the same component.

In the drawings attached to this specification, the size, position, connection relationship, etc. of each component constituting the present invention is exaggerated, reduced, or omitted in order to convey the idea of the present invention sufficiently clearly or for convenience of explanation. It may be described, and therefore its proportions or scale may not be exact.

In addition, hereinafter, in describing the present invention, detailed descriptions of configurations that are judged to unnecessarily obscure the gist of the present invention, for example, known technologies including prior art, may be omitted.

Figure 1 is a diagram schematically showing the configuration of a medical device capable of simultaneously examining symptoms of ptosis and strabismus according to the present invention, and Figure 2 is an examination panel in which a camera, a display LED, and an infrared LED are arranged in the medical device of Figure 1. This is a drawing showing the state viewed from the front.

The medical device capable of simultaneously examining ptosis and strabismus symptoms according to the present invention includes an examination panel (1) arranged vertically opposite the person's face, and is electrically connected to the examination panel to measure ptosis and strabismus symptoms. It includes a processor on which a program for making decisions is installed.

The examination panel 1 may preferably be implemented in the form of a square frame, but is not limited thereto.

The examination panel 1 includes a camera 10, a display LED 20, an infrared LED 30, and an LED controller.

In Figure 1, the camera 10, display LED 20, infrared LED 30, and LED controller are shown as if arranged sequentially, but this is for convenience of explanation of each component, and in reality, the LED controller is It is installed inside or outside the examination panel 1, and is arranged so that the ends of the remaining components are located on the same plane (outer surface of the examination panel) as shown in FIG. 2.

The camera 10 is provided to photograph the left eye, right eye, and the entire face, and may consist of two IR cameras and one RGB camera.

Using images captured with an IR camera, the distance between the pupil center and the eyelid border (Marginal Reflex Distance: MRD) is measured using a ptosis measurement program included in the processor described later, and strabismus symptoms are determined using a strabismus symptom determination program.

The RGB camera captures the entire face of a person. The processor acquires data for each frame captured by the RGB camera and calculates the distance between the pupil center and the eyelid border using only the data when the person's face is perpendicular to the camera. It is filtered to measure Marginal Reflex Distance (MRD).

It is preferable that the three cameras configured in this way are arranged side by side on the horizontal line in the middle of the examination panel 1.

The infrared LED 30 irradiates infrared rays to the pupil of a person to detect the pupil, and is provided in plural numbers.

These infrared LEDs 30 are arranged in a straight line with the three cameras 10 described above, and are preferably arranged one by one in turns with the cameras 10.

A plurality of display LEDs 20 are provided and arranged at regular intervals over the entire surface of the examination panel 1.

The LED controller receives signals from the processor and controls the display LED (20) and the infrared LED (30).

That is, a person looking at the display LED (20), which is lit by alternately turning on and off the vertically arranged upper and lower display LEDs among the display LEDs (20) arranged on the examination panel (1) using an LED controller. According to eye movement, the distance between the pupil center and the upper or lower eyelid border (Marginal Reflex Distance: MRD) is measured through the ptosis measurement program installed on the processor.

In addition, strabismus symptoms are determined through a strabismus symptom determination program installed in the processor according to the movement of the eyes of a person looking at a predetermined pattern indicated by lighting up the display LED 20 arranged on the examination panel 1 using an LED controller. .

The processor acquires data for each frame captured by the camera (RGB camera) 10, and only has data when the person's face is perpendicular to the camera 10, and uses the distance between the pupil center and the eyelid border (Marginal Reflex Distance) : MRD) can be included in the filtering program.

On the other hand, the examination method that can simultaneously examine ptosis and strabismus symptoms according to the present invention is a method of simultaneously examining ptosis and strabismus symptoms using the above-mentioned medical device, by irradiating infrared rays to the human eye and using a camera ( A first step of detecting the pupil in the eye image captured by 10), a second step of detecting the center of the pupil and then detecting the position of the upper or lower eyelid vertically from the center of the pupil, and using an LED controller Among the display LEDs 20 arranged on the examination panel 1, the vertically arranged upper display LED and lower display LED are alternately turned on and off, according to the movement of the eyes of the person looking at the display LED 20, which is turned on. The third step is to measure the distance (Marginal Reflex Distance: MRD) between the pupil center and the border of the upper or lower eyelid through the ptosis measurement program installed in the display LED (1) placed on the examination panel (1) using the LED controller. It includes a fourth step of determining strabismus symptoms through a strabismus symptom determination program installed in the processor according to the movement of the eyes of the person looking at the predetermined pattern indicated by 20) lighting.

When measuring ptosis in an MRD1 vision test, the angle of the patient's face may change with each measurement.

Accordingly, in order to detect MRD1 more accurately, it is important to properly fix the positions of the camera 10 and the person's face.

However, even if the camera 10 is fixed in an actual measurement situation, it is not easy to keep the person's face stationary.

Therefore, the present invention acquires data for every frame captured by the camera 10, and only has data when the person's face is perpendicular to the camera 10, and uses only the data from the pupil center to the eyelid border (Marginal Reflex Distance: A filtering program to measure MRD) can be included in the processor.

Figure 3 is a photograph showing the distance from the eyelid to the pupil center (Marginal Reflex Distance: MRD) and the palpebral fissure vertical height (PFH, or palpebral fissure width).

MRD (Marginal Reflex Distance) is the distance from the eyelid to the center of the pupil.

In Figure 3, MRD1 represents the distance from the pupil center to the upper eyelid border and means 'degree of eyelid sagging'. (4-5mm for Westerners, slightly smaller for Asians)

Ptosis is a condition in which the height of the upper eyelid is lowered due to various causes.

It is defined as when the distance (margin reflex distance (MRD)) between the midcorneal reflection, which is the center of the eye, and the edge of the upper eyelid when the eye is looking straight ahead, is lower than normal or the difference between both eyes is large.

The muscles that lift the upper eyelid include the palpebral elevator muscle, conjunctival Müller muscle, and forehead muscle.

Any factor that affects the function of these muscles can cause drooping eyelids.

The two most common causes of eyelid drooping are congenital ptosis, which is caused by congenital dysfunction of the eyelid elevator muscle in infants and young children, and old age, which occurs when the eyelid elevator muscle becomes weak and replaced by fat due to age-related changes with age. It is involutional ptosis.

Other possible causes include long-term contact lens use, a history of multiple eye surgeries, Horner syndrome, sagging eyebrows due to facial nerve paralysis, myasthenia gravis, third cranial nerve paralysis, progressive extraocular muscle paralysis, and traumatic injuries. .

In some cases, abnormal junctions between the trigeminal nerve and the oculomotor nerve occur in the brainstem, causing drooping eyelids when opening the mouth or moving the jaw to one side.

When the degree of eyelid drooping is mild and does not affect the pupil, the symptoms are that it feels heavy when opening the eyes, people look sleepy, or the eyelid height is asymmetrical, which does not look good cosmetically.

If the severity is so severe that it invades the pupil, it blocks the upper part of the field of vision, making it uncomfortable to see, so you feel comfortable lifting your eyelids or looking with your chin up, or you develop a habit of using your forehead muscles to open your eyes, and deep wrinkles form on your forehead. You can.

If it invades the center of the pupil, central vision and visual acuity will deteriorate.

In the case of suddenly occurring ptosis, it may be secondary ptosis caused by a disease other than congenital or age-related ptosis, so taking the history of the onset of ptosis is helpful in making a diagnosis.

MRD2 is the distance from the pupil center to the lower eyelid border.

PFH (Palpebral Fissure vertical height) refers to the vertical height of the eyelid fissure, and is also called the palpebral fissure width.

FIG. 4 is a photograph showing the output results of an MRD1 test using a medical device according to the present invention, and FIG. 5 is a photograph showing a reference object for calculating the actual distance corresponding to the MRD1 value measured in FIG. 4.

The measurement method of MRD1 is explained as follows.

(1) Set the face and camera so that both eyes appear from the IR camera.

(2) The MRD1 measurement algorithm is run from the captured image to obtain the pupil and upper eyelid point (x, y) values.

(3) Measure the pixel distance between the detected pupil center and two points on the upper eyelid.

(4) Calculate the actual distance (mm) per pixel from the reference object (FIG. 5) whose actual length is known.

(5) Calculate the actual distance of MRD1 by multiplying the MRD1 measurement value (pixel) by the actual distance value per pixel.

(6) The MRD1 value is measured in three cases: looking at the front (center), looking at the top, and looking at the bottom.

Above, various preferred embodiments of the present invention have been described by giving some examples, but the description of the various embodiments described in the "Detailed Contents for Carrying out the Invention" section is merely illustrative and the present invention Those skilled in the art will understand from the above description that the present invention can be implemented with various modifications or equivalent implementations of the present invention.

In addition, since the present invention can be implemented in various other forms, the present invention is not limited by the above description, and the above description is intended to make the disclosure of the present invention complete and is commonly used in the technical field to which the present invention pertains. It is provided only to fully inform those with knowledge of the scope of the present invention, and it should be noted that the present invention is only defined by each claim in the claims.

1: Examination panel
10: Camera
20: Display LED
30: Infrared LED

Claims (5)

A medical device comprising an examination panel arranged vertically opposite a person's face, and a processor electrically connected to the examination panel and installed with a program for measuring ptosis and determining strabismus symptoms, comprising:
The examination panel is,
Cameras arranged to take pictures of the left eye, right eye and the entire face respectively;
a plurality of infrared LEDs that irradiate infrared rays to the pupil of a person to detect the pupil;
a plurality of display LEDs arranged at regular intervals over the entire surface of the examination panel; and
Characterized in that it includes an LED controller that receives signals from the processor and controls the infrared LED and display LED.
A medical device that can simultaneously screen for symptoms of ptosis and strabismus.
A medical device comprising an examination panel arranged vertically opposite a person's face, and a processor electrically connected to the examination panel and installed with a program for measuring ptosis and determining strabismus symptoms, comprising:
The examination panel is,
three cameras arranged side by side on a horizontal line in the middle of the examination panel to capture images of the left eye, right eye, and entire face, respectively;
A plurality of infrared LEDs arranged in a straight line with the three cameras and irradiating infrared rays to the human eye to detect the human pupil;
a plurality of display LEDs arranged at regular intervals over the entire surface of the examination panel; and
Characterized in that it includes an LED controller that receives signals from the processor and controls the infrared LED and display LED.
A medical device that can simultaneously check for symptoms of ptosis and strabismus.
A medical device comprising an examination panel arranged vertically opposite a person's face, and a processor electrically connected to the examination panel and installed with a program for measuring ptosis and determining strabismus symptoms, comprising:
The examination panel is,
three cameras arranged side by side on a horizontal line in the middle of the examination panel to capture images of the left eye, right eye, and entire face, respectively;
A plurality of infrared LEDs arranged in a straight line with the three cameras and irradiating infrared rays to the human eye to detect the human pupil;
a plurality of display LEDs arranged at regular intervals over the entire surface of the examination panel; and
It includes an LED controller that receives signals from the processor and controls the infrared LED and display LED,
The processor acquires data for each frame captured by the camera, and only has data when the person's face is perpendicular to the camera, including the distance between the pupil center and the eyelid border (Marginal Reflex Distance: MRD) and the vertical distance of the upper eyelid. Characterized by filtering to measure (palpebral fissure width),
A medical device that can simultaneously check for symptoms of ptosis and strabismus.
A method of simultaneously examining symptoms of ptosis and strabismus using a medical device according to any one of claims 1 to 3, comprising:
A first step of detecting the pupil in an eye image captured by a camera by irradiating infrared rays to the human eye;
a second step of detecting the center of the pupil and then detecting the position of the upper or lower eyelid perpendicularly from the center of the pupil;
Using an LED controller, the vertically arranged upper and lower display LEDs are alternately turned on and off among the display LEDs arranged on the examination panel, and the eyelids installed in the processor are activated according to the movement of the eyes of the person looking at the display LEDs. A third step of measuring the distance between the pupil center and the upper or lower eyelid border (Marginal Reflex Distance: MRD) through a lower eyelid measurement program; and
A fourth step of determining strabismus symptoms through a strabismus symptom determination program installed in the processor according to the movement of the eyes of a person looking at a predetermined pattern indicated by lighting up the display LED placed on the examination panel using an LED controller; comprising; Characterized by,
How to screen for symptoms of ptosis and strabismus at the same time.
A method of simultaneously examining symptoms of ptosis and strabismus using a medical device according to any one of claims 1 to 3, comprising:
A first step of detecting the pupil in an eye image captured by a camera by irradiating infrared rays to the human eye;
a second step of detecting the center of the pupil and then detecting the position of the upper or lower eyelid perpendicularly from the center of the pupil;
Using an LED controller, the vertically arranged upper and lower display LEDs are alternately turned on and off among the display LEDs arranged on the examination panel, and the eyelids installed in the processor are activated according to the movement of the eyes of the person looking at the display LEDs. A third step of measuring the distance between the pupil center and the upper or lower eyelid border (Marginal Reflex Distance: MRD) through a lower eyelid measurement program; and
A fourth step of determining strabismus symptoms through a strabismus symptom determination program installed in the processor according to the movement of the eyes of a person looking at a predetermined pattern indicated by lighting up the display LED arranged on the examination panel using an LED controller;
The processor acquires data for each frame captured by the camera, and only has data when the person's face is perpendicular to the camera, including the distance between the pupil center and the eyelid border (Marginal Reflex Distance: MRD) and the vertical distance of the upper eyelid. Characterized by filtering to measure (palpebral fissure width),
How to screen for symptoms of ptosis and strabismus at the same time.