CN117357056A - Human eye measuring device and human eye measuring method - Google Patents

Abstract

The present disclosure provides a human eye measurement device and a human eye measurement method. The human eye measurement device of the present disclosure includes a monocular measurement module. The monocular measurement module includes: a beacon light source, which is used to emit initial light; a first parallel light conversion device, which converts the initial light into parallel light. Light; an optical path adjustment component, the optical path adjustment component adjusts the optical path of the parallel light output by the first parallel light conversion device to illuminate the target human eye; the optotype display, the distance between the optotype image provided by the optotype display and the target human eye Can be adjusted to cause the target human eye to produce different refractive responses; the Hartmann wavefront sensor is used to receive retinal reflected light from the target human eye in different refractive response states to perform wavefront imaging Difference information measurement; wherein, when the distance between the optotype image and the target human eye is adjusted, the optical path between the beacon light source and the target human eye is not adjusted.

Description

Human eye measurement device and human eye measurement method

Technical field

The present disclosure relates to the technical fields of human eye refraction measurement, visual function measurement and other technical fields. In particular, the present disclosure relates to a human eye measurement device and a human eye measurement method.

Background technique

The imaging and perception of the human eye is a rather complex process. Measurements related to human vision are generally divided into objective refractive error (wavefront aberration) measurement and subjective visual function measurement.

Traditional objective measurement and subjective measurement are performed step by step using different equipment. The optometry process is greatly affected by human factors. In recent years, technical solutions have proposed an integrated subjective and objective measurement method to solve the problem of inconsistent subjective and objective measurement equipment (for example, Chinese patent Documents CN201910777661.8, CN202121357258.9), but the measurement of subjective visual function is limited to distance vision measurement, and the refractive power and visual function under different adjustment states of the human eye cannot be measured.

The adjustment of the eyes is completely relaxed when checking distance vision, and partial adjustment is used when checking near vision and intermediate vision. The three types of vision represent three different refractive states, and the adjustment response of the human eye is closely related to the occurrence and development of myopia. Therefore, measuring the accommodation response of the human eye and making a preliminary judgment on the refractive error of the eye based on changes in distance, middle, and near vision can more fully evaluate the visual function of the human eye.

Clinically, it has been found that in some eye diseases, although the central vision is still good, the contrast sensitivity has been reduced. Therefore, the contrast sensitivity test and the distance and near vision test are particularly important in the subjective visual function test.

Contents of the invention

The present disclosure provides a human eye measurement device and a human eye measurement method.

According to an aspect of the present disclosure, a human eye measurement device is provided, including a monocular measurement module, where the monocular measurement module includes:

A beacon light source, the beacon light source is used to emit initial light;

A first parallel light conversion device, the first parallel light conversion device converts the initial light into parallel light;

An optical path adjustment component, which adjusts the optical path of the parallel light output by the first parallel light conversion device to illuminate the target human eye;

An optotype display, the distance between the optotype image provided by the optotype display and the target human eye can be adjusted so that the target human eye produces different diopter responses;

Hartmann wavefront sensor, the Hartmann wavefront sensor is used to receive retinal reflected light from the target human eye in different refractive response states to measure wavefront aberration information;

Wherein, when the distance between the optotype image and the target human eye is adjusted, the optical path between the beacon light source and the target human eye is not adjusted.

According to the human eye measurement device according to at least one embodiment of the present disclosure, the monocular measurement module further includes:

Optotype imaging objective lens, the optotype imaging objective lens is located between the optotype display and the target human eye to facilitate the target human eye to observe the optotype image.

According to the human eye measurement device according to at least one embodiment of the present disclosure, the monocular measurement module further includes:

A driving mechanism capable of adjusting the position of the optotype display to adjust the distance between the optotype image provided by the optotype display and the target human eye.

According to the human eye measurement device according to at least one embodiment of the present disclosure, the monocular measurement module further includes:

A focusing device that adjusts the distance between the optotype image provided by the optotype display and the target human eye by changing its position;

A driving mechanism capable of driving the focusing device so that the focusing device changes position.

According to the human eye measurement device of at least one embodiment of the present disclosure, the focusing device includes a single lens, a transmissive/reflective lens group or a variable focus liquid lens.

According to the human eye measurement device of at least one embodiment of the present disclosure, the driving mechanism includes a motor and a transmission mechanism driven by the motor, so as to output the driving action of the driving mechanism through the transmission mechanism.

According to the human eye measurement device according to at least one embodiment of the present disclosure, the monocular measurement module further includes:

A refractive compensation module is arranged in front of the target eye to perform refractive compensation when the target eye observes the optotype image.

According to the human eye measurement device of at least one embodiment of the present disclosure, the retinal reflected light from the target human eye in different refractive response states is sequentially transmitted to the Hartmann wave via the refractive compensation module and the optical path adjustment component. The front sensor receives it for wavefront aberration information measurement.

The human eye measurement device according to at least one embodiment of the present disclosure further includes:

A computer device capable of controlling the refractive compensation amount of the refractive compensation module based on the wavefront aberration information measured by the Hartmann wavefront sensor.

According to the human eye measurement device of at least one embodiment of the present disclosure, the refractive compensation module can perform refractive compensation when the target human eyes in different refractive response states observe the optotype image.

According to the human eye measurement device according to at least one embodiment of the present disclosure, the refractive compensation module includes a transmissive/reflective 4f system combined with a cylindrical lens group, a liquid lens, a flexible zoom lens, a deformable mirror, or liquid crystal spatial light modulation device.

According to the human eye measurement device according to at least one embodiment of the present disclosure, the human eye measurement device is a monocular measurement device or a binocular measurement device. When the human eye measurement device is a binocular measurement device, it includes two of the Monocular measurement module, two monocular measurement modules are arranged symmetrically to enable binocular measurement.

According to the human eye measurement device of at least one embodiment of the present disclosure, the two monocular measurement modules perform information processing and control based on the same computer device.

According to another aspect of the present disclosure, a human eye measurement method is provided, including:

Perform monocular or binocular wavefront aberration measurements to obtain wavefront aberration information;

Calculate and obtain the refractive compensation amount of single or binocular eyes based on the wavefront aberration information;

Wherein, one or both eyes are placed in different refractive response states to measure the wavefront aberration information.

The human eye measurement method according to at least one embodiment of the present disclosure further includes:

The refractive compensation amount of one or both eyes in different refractive response states is calculated based on the wavefront aberration information.

Description of the drawings

The accompanying drawings illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure, and are included to provide a further understanding of the disclosure, and are incorporated in and constitute part of this specification. part of the instruction manual.

Figure 1 is a schematic structural block diagram of a human eye measurement device according to some embodiments of the present disclosure.

FIG. 2 is a schematic structural block diagram of a human eye measurement device according to other embodiments of the present disclosure.

Figure 3 is a schematic flowchart of a human eye measurement method according to some embodiments of the present disclosure.

Explanation of reference signs

100 Human Eye Measurement Device

101 beacon light source

102 The first parallel light conversion device

103 Optical path adjustment component

104 Optotype display

105 Hartmann wavefront sensor

106 Optotype Imaging Objective Lens

107 drive mechanism

108 Focusing device

109 Refractive compensation module

110 Computer equipment

111 caliber matching module

200 Target human eye.

Detailed ways

The present disclosure will be described in further detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific implementations described here are only used to explain the relevant content, but are not intended to limit the present disclosure. It should also be noted that, for convenience of description, only parts related to the present disclosure are shown in the drawings.

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other. The technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings and embodiments.

Unless otherwise specified, the illustrated exemplary embodiments/examples are to be understood as exemplary features providing various details of some manner in which the technical concepts of the present disclosure may be implemented in practice. Therefore, unless otherwise stated, features of various embodiments/embodiments may be additionally combined, separated, interchanged and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in drawings is often used to make boundaries between adjacent parts clear. As such, unless stated otherwise, the presence or absence of cross-hatching or shading does not convey or indicate any knowledge of the specific materials, material properties, dimensions, proportions, commonalities between the components shown and/or any other characteristics of the components, Any preferences or requirements for attributes, properties, etc. Furthermore, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially concurrently or in the reverse order of that described. In addition, the same reference numerals represent the same components.

When an element is referred to as being "on," "on," "connected to" or "coupled to" another element, it can be directly on, directly connected to, or directly connected to the other element. Either directly coupled to said other component, or intervening components may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For this purpose, the term "connected" may refer to a physical connection, an electrical connection, etc., with or without intervening components.

For descriptive purposes, the present disclosure may use terms such as “under,” “under,” “under,” “under,” “over,” “on,” “on.” Spatially relative terms, such as on, higher, and side (e.g., in a sidewall), are used to describe the relationship of one feature to another (other) feature as illustrated in the figures. relation. In addition to the orientation depicted in the figures, spatially relative terms are intended to encompass various orientations of the device in use, operation, and/or manufacture. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" may encompass both orientations "above" and "below." Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "includes" and variations thereof are used in this specification, it is stated that the stated features, integers, steps, operations, parts, components and/or groups thereof are present but not excluded. One or more other features, integers, steps, operations, parts, components and/or groups thereof are present or appended. It is also noted that, as used herein, the terms "substantially," "approximately," and other similar terms are used as terms of approximation and not as terms of degree, and as such, they are used to explain what one of ordinary skill in the art would recognize. Inherent deviations from measured, calculated and/or supplied values.

Figure 1 is a schematic structural block diagram of a human eye measurement device according to some embodiments of the present disclosure. FIG. 2 is a schematic structural block diagram of a human eye measurement device according to other embodiments of the present disclosure.

Referring to Figures 1 and 2, in some embodiments of the present disclosure, the human eye measurement device 100 of the present disclosure includes a monocular measurement module, and the monocular measurement module includes:

Beacon light source 101, beacon light source 101 is used to emit initial light (beacon light);

The first parallel light conversion device 102 converts the initial light into parallel light;

The optical path adjustment component 103 adjusts the optical path of the parallel light output by the first parallel light conversion device 102 to illuminate the target human eye;

Optotype display 104, the distance between the optotype image provided by the optotype display 104 and the target human eye can be adjusted so that the target human eye 200 produces different diopter responses;

Hartmann wavefront sensor 105, Hartmann wavefront sensor 105 is used to receive retinal reflected light from the target human eye 200 in different diopter response states to measure wavefront aberration information;

When the distance between the optotype image and the target human eye 200 is adjusted, the optical path between the beacon light source 101 and the target human eye 200 is not adjusted.

The light source type of the beacon light source 101 may be an LD light source, an LED light source, an SLD light source, etc., and the light source shape may be a point light source, or an extended light source, etc.

Referring to FIGS. 1 and 2 , in some embodiments of the present disclosure, the distance between the optotype image provided by the optotype display 104 and the target human eye can be adjusted so that the target human eye 200 produces a different diopter response, Furthermore, the Hartmann wavefront sensor 105 can receive retinal reflected light from the target human eye 200 in different refractive response states to measure wavefront aberration information. The present disclosure also designs the optical path of the entire human eye measurement device 100. During the process of adjusting the distance between the optotype image and the target human eye 200, the optical path between the beacon light source 101 and the target human eye 200 is not adjusted. , more preferably, the optical path between the Hartmann wavefront sensor 105 and the target human eye 200 is not adjusted, so that the measurement optical path of the wavefront aberration information is more stable and the measurement results are more accurate.

Continuing to refer to FIGS. 1 and 2 , in some embodiments of the present disclosure, the human eye measurement device 100 of the present disclosure further includes: an optotype imaging objective 106 located between the optotype display 104 and the target human eye 200 time to facilitate the target human eye 200 to observe the optotype image. The target imaging objective lens 106 may be a convex lens or a combination of convex lenses, etc.

Preferably, the optotype imaging objective lens 106 of the present disclosure is located outside the optical path between the beacon light source 101 and the target human eye 200 and at the same time outside the optical path between the Hartmann wavefront sensor 105 and the target human eye 200 to avoid wave interference. The measurement of front aberration information produces unnecessary effects.

Referring to FIG. 1 , in some embodiments of the present disclosure, the human eye measurement device 100 of the present disclosure further includes:

The driving mechanism 107 is capable of adjusting the position of the optotype display 104 to adjust the distance between the optotype image provided by the optotype display 104 and the target human eye 200 .

Referring to Figure 2, in other embodiments of the present disclosure, the human eye measurement device 100 of the present disclosure includes:

The focusing device 108 adjusts the distance between the optotype image provided by the optotype display 104 and the target human eye 200 by changing the position;

The driving mechanism 107 is capable of driving the focusing device 108 so that the focusing device 108 changes its position.

Among them, the focusing device 108 includes a single lens, a transmissive/reflective lens group or a variable focus liquid lens, etc.

The present disclosure adjusts the distance between the optotype image provided by the optotype display 104 and the target human eye 200 so that the target human eye 200 produces different dioptric responses when observing the optotype image, so that the Hartmann wavefront sensor 105 can measure Wavefront aberration information of the target human eye 200 in different refractive response states.

The driving mechanism 107 described in this disclosure may include a motor and a transmission mechanism (such as a base) driven by the motor to output the driving action of the driving mechanism 107 through the transmission mechanism.

The motor may be a screw motor, and the transmission mechanism may be a base that can be driven by the screw to perform reciprocating motion. The present disclosure does not specifically limit the specific structure of the driving mechanism 107. Persons skilled in the art will refer to the technical solution of the present disclosure. Any adjustments made to the specific implementation of the driving mechanism 107 based on the inspiration fall within the protection scope of this disclosure.

Continuing to refer to Figures 1 and 2, in some embodiments of the present disclosure, the human eye measurement device 100 of the present disclosure further includes:

The refractive compensation module 109 is disposed in front of the target eye 200 to perform refractive compensation when the target eye 200 observes the optotype image provided by the optotype display 104 .

It should be noted that the refractive compensation module 109 of the present disclosure is located in the optical path between the Hartmann wavefront sensor 105 and the target human eye 200 , is located in the optical path between the beacon light source 101 and the target human eye 200 , and is located in In the optical path between the target display 104 and the target human eye 200 .

Based on the above configuration of the refractive compensation module 109, the human eye measurement device 100 of the present disclosure can measure the wavefront aberration information of the target human eye 200 in different refractive response states.

Referring to Figures 1 and 2, in some embodiments of the present disclosure, the retinal reflected light from the target human eye 200 in different refractive response states is sequentially passed through the refractive compensation module 109 and the optical path adjustment component 103 by the Hartmann wavefront. Sensor 105 receives to make wavefront aberration information measurements.

In some embodiments of the present disclosure, referring to FIGS. 1 and 2 , the human eye measurement device 100 of the present disclosure further includes:

Computer device 110 (desktop computer, portable computer, handheld terminal device, embedded device terminal and other devices with computing processing capabilities), the computer device 110 can control refraction based on the wavefront aberration information measured by the Hartmann wavefront sensor 105 The refractive compensation amount of the compensation module 109.

The computer device 110 is capable of controlling the refractive compensation amount of the refractive compensation module 109 based on the wavefront aberration information measured by the Hartmann wavefront sensor 105 . Calculating the refractive compensation amount based on the wavefront information difference information belongs to the existing technology and will not be described in detail in this disclosure.

For example, the Hartmann wavefront sensor 105 can measure the wavefront aberration information of the target human eye 200 in a completely relaxed state, and the computer device 110 controls the refractive compensation module 109 to provide a corresponding refractive compensation amount based on the wavefront aberration information. , to achieve the correction of refractive errors (defocus, astigmatism, etc.) of the target human eye 200.

In some embodiments of the present disclosure, the refractive compensation module 109 of the human eye measurement device 100 of the present disclosure can perform refractive compensation when the target human eye 200 in different refractive response states observes the optotype image.

Among them, the refractive compensation module 109 described in this disclosure may include a transmissive/reflective 4f system combined with a cylindrical lens group, a liquid lens, a flexible zoom lens, a deformable mirror, or a liquid crystal spatial light modulator, etc.

1 and 2 respectively show a schematic structural block diagram of a human eye measurement device 100 according to different embodiments of the present disclosure.

It should be noted that the specific structures shown in Figures 1 and 2 are intended to explain the technical solution of the human eye measurement device of the present disclosure in detail and should not be understood as limiting the technical solution of the human eye measurement device of the present disclosure.

The human eye measurement device of the present disclosure will be described in more detail below with reference to FIGS. 1 and 2 .

Referring to Figures 1 and 2, the human eye measurement device of the present disclosure can measure wavefront aberration information and visual function of the target human eye in different refractive response states (adjustment states).

The human eye measurement device 100 of the present disclosure preferably includes a beacon light source 101, a first parallel light conversion device 102 (such as a convex lens), an optical path adjustment component 103 (such as a spectroscopic device, which can be composed of two spectroscopes, and two spectroscopes). mirrors are arranged in parallel), an optotype display 104, a Hartmann wavefront sensor 105, an optotype imaging objective lens 106, a driving mechanism 107, a refractive compensation module 109, and a computer device 110.

Among them, the beacon light source 101, the first parallel light conversion device 102 (such as a convex lens), the optical path adjustment component 103, the optotype display 104, the Hartmann wavefront sensor 105, the optotype imaging objective 106, the driving mechanism 107, and the refractive compensation The module 109 constitutes a monocular measurement module. The two monocular measurement modules are symmetrically arranged to enable binocular measurement. The two monocular measurement modules are based on the same computer device 110 for information processing and control.

In some embodiments of the present disclosure, each monocular measurement module further includes an aperture matching module 111. The aperture matching module 111 is configured between the Hartmann wavefront sensor 105 and the optical path adjustment assembly 103. The aperture matching module 111 is used to adjust the optical path via The beam aperture of the reflected light from the target human eye 200 reflected by the optical path adjustment component 103 is adjusted to adapt to the detection aperture of the Hartmann wavefront sensor 105 . The aperture matching module 111 of the present disclosure is preferably implemented through a lens group. Inspired by the technical solution of the present disclosure, those skilled in the art can adjust or select the lens combination method of the aperture matching module 111, which all fall within the protection scope of the present disclosure.

Referring to Figure 2, in some embodiments of the present disclosure, each monocular measurement module also includes the focusing device 108 described above. The focusing device 108 adjusts the optotype image provided by the optotype display 104 to the target person by changing the position. The distance between eyes is 200.

In each monocular measurement module, the light emitted by the beacon light source 101 is collimated into parallel light by the first parallel light conversion device 102, and then passes through the optical path adjustment component 103 (spectroscopic device) and the refractive compensation module 109 before entering the retina of the target human eye. , the light entering the fundus of the eye is reflected by the retina and then returns along the original optical path to the optical path adjustment component 103 (spectroscopic device), and then enters the Hartmann wavefront sensor 105 to complete the wavefront aberration measurement of the measured target human eye in a completely relaxed state. ; The computer device 110 controls the refractive compensation module 109 according to the measured wavefront aberration information to complete the correction of refractive errors (defocus, astigmatism, etc.), and then the computer device 110 controls the driving mechanism 107 to control the visual target display 104 to provide The distance of the optotype image in front of the target human eye is such that the target human eye 200 produces different dioptric responses, and the reaction of the human eye in different diopter response states is measured through the Hartmann wavefront sensor 105; the visual acuity is observed through the eyes of the subject. The measurement task on the target display 104 can perform visual function measurement, which includes but is not limited to visual acuity measurement at different distances and contrast sensitivity measurement.

Referring to Figures 1 and 2, the computer device 110 can calculate information such as defocus, astigmatism, and astigmatism axis based on the wavefront aberration information measured by the Hartmann wavefront sensor 105. The computer device 110 controls the refractive compensation module 109 to complete Correcting the corresponding refractive error. At this point, the single-eye objective aberration measurement and refractive error correction have been completed.

During the objective aberration measurement process, if you want to perform binocular synchronous measurement, you need to align both eyes first, and then complete the synchronous measurement of the wavefront aberration of both eyes while fixating both eyes.

The human eye measurement device 100 of the present disclosure can measure the wavefront aberration of the target human eye under different refractive response states:

Referring to Figure 1, after the objective aberration measurement and refractive error correction are completed, the computer device 110 controls the driving mechanism 107 to drive the optotype display 104 to move to different positions in front of the target human eye to generate different refractive stimulation, Hartmann wavefront sensor 105 measures the aberration of the human eye in different refractive response states, and can complete the aberration measurement in different refractive response states to obtain the refractive adjustment response of the human eye.

Referring to Figure 1, for example, based on the human eye measurement device of the present disclosure, visual acuity measurements can be performed in a variety of measurement states:

(1) The computer device 110 controls the driving mechanism 107 of the two monocular measurement modules to move the optotype display 104 to 30cm in front of the target eye, and performs wavefront aberration measurement and refractive error correction of the left and right eyes respectively at the current position. , the computer device 110 controls the test tasks displayed on the optotype display 104 to complete the near vision measurement of the left eye and the near vision measurement of the right eye respectively.

(2) The computer device 110 controls the driving mechanism 107 of the two monocular measurement modules to move the optotype display 104 to 60cm in front of the target eye, and performs wavefront aberration measurement and refractive error correction of the left and right eyes respectively at the current position. , the computer device 110 controls the test tasks displayed on the optotype display 104 to complete the middle vision measurement of the left eye and the middle vision measurement of the right eye respectively.

(3) The computer device 110 controls the driving mechanism 107 of the two monocular measurement modules to move the optotype display 104 to 500cm in front of the target eye, and performs wavefront aberration measurement and refractive error correction of the left and right eyes respectively at the current position. , the computer device 110 controls the test tasks displayed on the optotype display 104 to complete the distance vision measurement of the left eye and the distance vision measurement of the right eye respectively.

(4) Complete binocular alignment first, and then control the left and right optotype displays 104 to display the same test task through the computer device 110. The computer device 110 controls the driving mechanism 107 to move the optotype displays 104 to 30 mm in front of the measuring eye. , 60mm and 500cm, the wavefront aberration measurement and refractive error correction of the left and right eyes are respectively carried out at the current position, and the near vision, middle vision and distance vision of both eyes are measured under the condition of binocular fusion.

Referring to Figure 2, the above measurement can also be completed through the human eye measurement device shown in Figure 2, which will not be described again.

Taking Figure 1 as an example, the human eye measurement device of the present disclosure can perform contrast sensitivity measurement, and the measurement can be based on the following steps:

(1) The computer device 110 controls the driving mechanism 107 to move the optotype display 9 to a position 500cm in front of the measuring eye (i.e., the target human eye), and performs wavefront aberration measurement and refractive error correction of the left eye at the current position. The computer device 110 The left optotype display 104 is controlled to randomly generate grating stripes with different spatial frequencies and different contrast values according to the contrast sensitivity measurement method. The subject answers based on whether they can be recognized subjectively, and the contrast sensitivity measurement result of the left eye is obtained.

(2) The computer device 110 controls the driving mechanism 107 to move the optotype display 9 to a position 500cm in front of the measuring eye (ie, the target human eye), and performs wavefront aberration measurement and refractive error correction of the right eye at the current position. The computer device 110 The right optotype display 104 is controlled to randomly generate grating stripes with different spatial frequencies and different contrast values according to the contrast sensitivity measurement method. The subject answers based on whether they can be recognized subjectively, and the contrast sensitivity measurement result of the right eye is obtained.

(3) The computer device 110 controls the driving mechanism 107 to move the two visual target displays 104 to 500cm in front of the measuring eye. First, the binocular alignment is completed, and the wavefront aberration measurement and refractive error correction of both eyes are performed at the current position. Then the computer device 110 controls the left and right optotype displays 104 to display the same target, that is, they randomly display grating stripes with different spatial frequencies and different contrast values. The subject answers based on whether they can recognize it subjectively, and the contrast sensitivity of both eyes is obtained. Measurement results.

By controlling the driving mechanism 107 of the computer device 110 to move the optotype display 9 to different positions in front of the measuring eye (left eye and/or right eye), contrast sensitivity measurement under different refractive response states can be completed.

Referring to FIG. 2 , the computer device 110 can also be used to control the driving mechanism 107 to drive the focusing device 108 to complete the contrast sensitivity measurement of the measuring eye (left eye and/or right eye) in the same diopter response state, which will not be described again.

Taking into account the shortcomings of existing aberration and visual function measurement devices in the adjustment state of the human eye, the human eye measurement device of the present disclosure can complete aberration measurement in the adjustment state of the human eye on the same instrument, as well as close and medium distance measurements. Visual acuity measurement at distance and long distance and contrast sensitivity measurement of single/binary eyes, while ensuring that the measurement environment and measurement conditions are consistent, measure the different accommodation responses of the human eye and the visual acuity under different adjustment states, and the measurement results can be used effectively Assess human eye/binocular vision function.

Based on the human eye measurement device provided by the present disclosure in any of the above embodiments, the present disclosure also provides a human eye measurement method S100, with reference to Figure 3, including:

S102. Perform monocular or binocular wavefront aberration measurement to obtain wavefront aberration information;

S104. Calculate and obtain the refractive compensation amount of single or binocular eyes based on the wavefront aberration information;

Among them, the single eye or both eyes are placed in different refractive response states to measure the wavefront aberration information, and then the refractive compensation amount of the single eye or both eyes in different refractive response states is calculated based on the wavefront aberration information.

In the description of this specification, reference to the description of the terms "one embodiment/way", "some embodiments/way", "example", "specific example" or "some examples" etc. means that the description in conjunction with the embodiment/way or Examples describe specific features, structures, materials, or characteristics that are included in at least one embodiment/mode or example of the present disclosure. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment/mode or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, those skilled in the art may combine and combine different embodiments/ways or examples and features of different embodiments/ways or examples described in this specification unless they are inconsistent with each other.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

Those skilled in the art should understand that the above-mentioned embodiments are only for clearly illustrating the present disclosure, but are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications can be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims (10)

1. A human eye measurement device comprising a monocular measurement module, the monocular measurement module comprising:

a beacon light source for emitting an initial light;

a first parallel light conversion device that converts the initial light into parallel light;

the light path adjusting component is used for adjusting the light path of the parallel light output by the first parallel light conversion device so as to irradiate the target human eyes;

a optotype display providing an optotype image with a distance from the target human eye that can be adjusted to cause the target human eye to produce different diopter responses; and

a Hartmann wavefront sensor for receiving retinal reflected light from the target human eye in different diopter response states for wavefront aberration information measurement;

when the distance between the sighting target image and the target human eye is adjusted, the optical path between the beacon light source and the target human eye is not adjusted.

2. The human eye measurement device according to claim 1, wherein the monocular measurement module further comprises:

and the optotype imaging objective lens is positioned between the optotype display and the target human eye so as to be beneficial to the target human eye to observe the optotype image.

3. The human eye measurement device according to claim 1 or 2, wherein the monocular measurement module further comprises:

the driving mechanism can adjust the position of the sighting target display to adjust the distance between the sighting target image provided by the sighting target display and the target human eye.

4. The human eye measurement device according to claim 1 or 2, wherein the monocular measurement module further comprises:

a focusing device for adjusting a distance between a target image provided by the target display and the target human eye by changing a position; and

and a driving mechanism capable of driving the focusing device to cause the focusing device to change position.

5. The human eye measurement device according to claim 4, wherein the focusing device comprises a single lens, a transmissive/reflective lens group, or a variable focus liquid lens.

6. The human eye measurement device according to claim 3 or 4, wherein the driving mechanism comprises a motor and a transmission mechanism driven by the motor, so that the driving action of the driving mechanism is outputted through the transmission mechanism.

7. The human eye measurement device according to claim 1, wherein the monocular measurement module further comprises:

the refraction compensation module is configured in front of the target human eye to perform refraction compensation when the target human eye observes the sighting target image.

8. The human eye measurement device of claim 7, wherein the retinal reflected light from the target human eye in different diopter response states is received by the hartmann wavefront sensor via the refraction compensation module, an optical path adjustment assembly in sequence for wavefront aberration information measurement.

9. The human eye measurement device according to any one of claims 1 to 8, further comprising:

a computer device capable of controlling a refractive compensation amount of a refractive compensation module based on wavefront aberration information measured by the hartmann wavefront sensor;

optionally, the refraction compensation module can perform refraction compensation when the target human eye in different refraction response states observes the optotype image;

optionally, the refraction compensation module comprises a transmissive/reflective 4f system in combination with a cylindrical lens group, a liquid lens, a flexible zoom lens, a anamorphic mirror, or a liquid crystal spatial light modulator;

optionally, the human eye measuring device is a monocular measuring device or a binocular measuring device, when the human eye measuring device is a binocular measuring device, the two monocular measuring devices are symmetrically arranged so as to be capable of binocular measurement;

alternatively, both of the monocular measurement modules perform information processing and control based on the same computer device.

10. A method of measuring a human eye, comprising:

monocular or binocular wavefront aberration measurement is carried out to obtain wavefront aberration information; and

calculating and obtaining a monocular or binocular refraction compensation amount based on the wavefront aberration information;

wherein the wavefront aberration information measurement is made with monocular or binocular in different diopter response states;

optionally, the method further comprises:

and calculating and obtaining the refraction compensation quantity of the monocular or binocular in different diopter response states based on the wavefront aberration information.