CN210383871U - Adjustable multifunctional row mirror - Google Patents
Adjustable multifunctional row mirror Download PDFInfo
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- CN210383871U CN210383871U CN201920822456.4U CN201920822456U CN210383871U CN 210383871 U CN210383871 U CN 210383871U CN 201920822456 U CN201920822456 U CN 201920822456U CN 210383871 U CN210383871 U CN 210383871U
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Abstract
The utility model provides an adjustable multifunctional row's mirror. The utility model discloses a mounting bracket, characterized by: be provided with two parallel tracks on the mounting bracket, every track the inside be provided with a lead screw, every be provided with on the lead screw with the lead screw passes through threaded connection's screw, every connect on the screw and stretch out the outer row's of track mirror monomer, every screw connection an adjust knob, the adjust knob of two lead screws is located respectively the both sides of mounting bracket. The utility model discloses can tentatively carry out the inspection of the positive and negative relative regulation of people's eye, can also regard as the neutralization lens when inspection optometry is inspected to and MEM developments inspection method adjusts the training that reaction measurement, lens method regulatory function etc..
Description
The technical field is as follows:
the utility model relates to a multi-functional row's mirror with adjustable belongs to and looks optical technical field.
Background art:
the row mirror as the examination shadow and the lens has the advantages of convenient carrying and rapid degree increase and decrease, and is particularly suitable for examination shadow objects which can not use a trial frame, such as infants, and the situations that the row mirror is suitable for the row mirror because the row mirror is not convenient to carry in general investigation. The basic structure of the existing row mirror is that a plurality of lenses with different luminosity are arranged on a row mirror body, and the row mirror can have several uses in visual inspection: the first, examination and neutralization lens and the second adjusting function training. The lens-arranging device can be used as a lens for examining the shadow and neutralizing the shadow, the neutralization of the shadow is quick and convenient, but the pupil distance of the common lens-arranging device cannot be adjusted; the positive and negative relative adjustment of the two eyes of the common volleyball cannot be measured at the same time; the common eyeglasses in the adjustment function training can not adjust the pupil distance and can not simultaneously train two eyes.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the problem that exists provides a multi-functional range finder with adjustable, can tentatively carry out the inspection of the positive and negative relative regulation of people's eye, can also regard as the neutralization lens when inspection shadow optometry inspection to use to and MEM developments inspection shadow method regulation reaction is measured, lens method regulatory function's training etc.
The above purpose is realized by the following technical scheme:
multi-functional range mirror with adjustable, including the mounting bracket, be provided with two parallel tracks on the mounting bracket, every track the inside be provided with a lead screw, every be provided with on the lead screw with the lead screw passes through threaded connection's screw, every connect on the screw and stretch out the outer range mirror monomer of track, every screw connection an adjust knob, the adjust knob of two lead screws is located respectively the both sides of mounting bracket.
The adjustable multifunctional row mirrors are characterized in that each lead screw is arranged in the track through bearings at two ends.
The adjustable multifunctional row mirror is characterized in that a handle is arranged below the mounting frame.
The adjustable multifunctional row mirror is characterized in that limiting baffles are arranged on two sides of the track.
The adjustable multifunctional row mirrors are characterized in that the two row mirror monomers are respectively provided with identification layers with different colors.
The adjustable multifunctional row lenses are characterized in that each row lens monomer is provided with a plurality of lenses with different diopters, and the lenses are all negative spherical lenses or all positive spherical lenses.
The adjustable multifunctional volleyball mirror comprises lenses with the luminosity of-0.50D, -1.00D, -1.50D, -2.00D, -2.50D, -3.00D, -3.50D, -4.00D and-5.00D.
The adjustable multifunctional row mirror comprises lenses with the luminosity of 0.50D, 1.00D, 1.50D, 2.00D, 2.50D, 3.00D, 3.50D, 4.00D and 5.00D.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a left side view of the present invention.
In the figure: 1. A mounting frame; 2. a track; 3. a screw rod; 4. a nut; 5. arranging mirror monomers; 6. adjusting a knob; 7. a bearing; 8. a handle; 9. and a limiting baffle.
Detailed Description
The present invention will be further explained with reference to the following embodiments, which are to be understood as illustrative only and not limiting the scope of the invention.
As shown in fig. 1-2, the adjustable multifunctional row mirror of this embodiment includes an installation frame 1, be provided with two parallel tracks 2 on the installation frame, every track the inside be provided with a lead screw 3, every be provided with on the lead screw with the lead screw passes through threaded connection's screw 4, every connect on the screw and stretch out the outer row mirror monomer 5 of track, every screw connection an adjust knob 6, the adjust knob of two lead screws is located respectively the both sides of installation frame.
In the adjustable multifunctional row mirror, each lead screw is arranged in the track through bearings 7 at two ends.
The adjustable multifunctional row mirror is characterized in that a handle 8 is arranged below the mounting frame.
The adjustable multifunctional row mirror is characterized in that limiting baffles 9 are arranged on two sides of the track.
The adjustable multifunctional row mirrors are characterized in that the two row mirror monomers are respectively provided with identification layers with different colors.
The adjustable multifunctional row lenses are characterized in that each row lens monomer is provided with a plurality of lenses with different diopters, and the lenses are all negative spherical lenses or all positive spherical lenses.
The adjustable multifunctional volleyball mirror comprises lenses with the luminosity of-0.50D, -1.00D, -1.50D, -2.00D, -2.50D, -3.00D, -3.50D, -4.00D and-5.00D.
The adjustable multifunctional row mirror comprises lenses with the luminosity of 0.50D, 1.00D, 1.50D, 2.00D, 2.50D, 3.00D, 3.50D, 4.00D and 5.00D.
The adjustable multifunctional row lenses comprise two sets, one set is two rows of negative spherical lenses, the other set is two rows of positive spherical lenses, the luminosity of the two rows of spherical lenses is consistent, the spherical lenses can be overlapped through the adjustment of the optical center distance, and the optical center distance can be adjusted. The single row degree is 0.50D, 1.00D, 1.50D, 2.00D, 2.50D, 3.00D, 3.50D, 4.00D and 5.00D, and if the single row degree is overlapped, new row lens combinations of 1.00D, 2.00D, 3.00D, 4.00D, 5.00D, 6.00D, 7.00D, 8.00D and 10.00D are formed.
In this embodiment the adjustable multifunctional row mirror, be provided with the length scale on the mounting bracket, hold the adjustment distance when being convenient for adjust.
The working process is as follows:
the utility model discloses a multi-functional range finder with adjustable can tentatively carry out the inspection that people's eye positive and negative relative regulation, can also regard as the neutralization lens when inspection shadow optometry inspection to use to and MEM developments inspection shadow method regulation reaction measures, lens method regulatory function's training etc.
The adjustable multifunctional row mirror positive and negative relative adjustment measurement is applied as follows:
the examination of positive and negative relative regulation at present stage can only be examined on the comprehensive optometry instrument, but the outgoing screening is not very convenient if the comprehensive optometry instrument is carried, and the adjustable multifunctional row mirror is convenient to carry and can preliminarily measure the positive and negative relative regulation of the examinee. Positive and negative relative accommodation, i.e., under the condition that the convergence of the eyes is not changed, the amount of accommodation of the eyes is independently increased or decreased, and the convergence of the convergence and the convergence compensate for the accommodation convergence to maintain the monocular vision, which is called relative accommodation. The maximum amount of accommodation that can be relaxed with both eyes looking at a fixed near target and no change in vergence is called Negative Relative Accommodation (NRA). The maximum amount of accommodation that can be increased with both eyes looking at a fixed near target and no change in vergence is called Positive Relative Accommodation (PRA).
The two eyes are placed on the proper far-vision correcting lens to watch 40cm near cross visual target or the best visual target in the upper line, the same amount of convex lens is added to the two eyes simultaneously until the fuzzy limit of the visual target, and the adjustment response amount released by the convex lens is negative relative adjustment. After the convex lens is removed, the same amount of concave lenses are added to the visual target fuzzy limit at the same time for both eyes, and the adjustment response amount induced by the concave lenses is adjusted in a positive phase manner. During detection, negative relative regulation is usually determined firstly, then positive relative regulation is determined, and the detection principle of firstly inhibiting and then stimulating is followed, so that the detection result of the firstly detected item is prevented from being influenced by the secondly detected item. Population normal values: positive relative regulation is-2.37 +/-1.00D, and negative relative regulation is +2.00 +/-0.50D.
Use the utility model discloses a multi-functional range finder carries out positive negative relative regulation inspection operation step with adjustable:
⑴, correcting ametropia of eyes completely, and adjusting the interpupillary distance of the upper row of glasses.
⑵, turning on the lighting lamp to let the examinee hold the near vision mark card and place it at 40cm to let his eyes watch the last line of sight mark with best near vision.
⑶, the examiner holds the row of positive sphere lenses and gradually increases the positive sphere lenses until the eye to be tested reports the initial point of persistent blur of the optotype, i.e. the first value at which the optotype can be read but which is different from the sharpness at which it begins to be seen, the added positive sphere lens power being the Negative Relative Adjustment (NRA) of the eye to be tested.
⑷ the adjustable multifunctional row lens is changed into a red negative sphere lens group, the near vision target card is held by the hand of the examinee and is placed at the position of 40cm, and the two eyes of the examinee watch the last row of visual target orders with the best near vision.
⑸, the negative sphere is gradually added until the eye to be tested reports a persistent blur in the optotype, the added negative sphere power being the Positive Relative Adjustment (PRA) of the eye to be tested.
Secondly, the adjustable multifunctional row mirror image detection neutralization lens is applied:
the two rows of negative spherical lenses are adjusted and overlapped together to form a new row of negative spherical lens, and the two rows of positive spherical lenses are adjusted and overlapped together to form a new row of positive spherical lens. The row mirror as the examination shadow and the lens has the advantages of convenient carrying and rapid degree increase and decrease, and is particularly suitable for examination shadow objects which can not use a trial frame, such as infants, and the situations that the row mirror is suitable for the row mirror because the row mirror is not convenient to carry in general investigation.
The adjustable multifunctional row mirror film examination method comprises the following operation steps:
the examiner observes the shadow of the reflected light of the eye fundus retina in the pupil area of the examinee through the ophthalmoscope.
1. If the simple spherical ametropia exists, the examiner judges whether the fundus oculi retinal image moves in a clockwise or anticlockwise manner. Adding a positive row mirror in a forward motion manner until a neutralization shadow motion occurs; the negative row mirrors are added in a reverse motion mode until a neutralization motion occurs. The measured eye's actual refractive error = neutralization power + artificial myopia power. For example, the retinal movement of the fundus to be detected is the inverse movement, the neutralization movement appears after minus 2.00DS is added, and the actual refractive error is = -2.00DS + (-1.50) = -3.50 DS.
2. If the tested eye has astigmia and ametropia, the shadow in one direction can not be directly neutralized during image examination, the shadow in the fundus retina in two important directions of the strong and weak meridians need to be neutralized, the directions of the strong and weak meridians of astigmatism need to be judged, and then neutralization is respectively carried out. And (3) inspecting the astigmatism eye by using a belt-shaped optical inspection mirror:
⑴, judging whether astigmatism exists or not, rotating the light band of the inspection mirror to 180 degrees, 45 degrees, 90 degrees and 135 degrees respectively, and judging whether the measured eye has astigmatism or not by three kinds of shadow phenomena, namely, a fracture phenomenon, a thickness phenomenon and a shear phenomenon.
⑵ determining the meridian direction of astigmatic eye
As the directions of the principal meridians of the intensity of the regular astigmatic eyes are mutually vertical, one meridian direction is determined first, and the other meridian direction is also determined basically, and then neutralization is carried out respectively.
①, crack phenomenon determines principal meridian direction
When the direction of the reflective belt of the pupil area of the eye to be detected is different from that of the image detection lens, the image detection lens optical belt is rotated to be consistent with the direction of the reflective belt of the eye to be detected, the direction of the image detection lens optical belt is one of the main meridians of the astigmatic eye, and the other main meridian is in the direction perpendicular to the main meridians.
② thickness phenomenon determining principal meridian direction
If the widths of the reflective bands of the pupil area of the measured eye are different in different directions, the reflective bands of the inspection mirror are rotated by 360 degrees, and the widest and narrowest directions of the reflective bands of the pupil area of the measured eye are the two main meridian directions of the astigmatic eye.
③ determining principal meridian direction by shearing phenomenon
In the process of shaking the optical band of the image-detecting mirror, whether the reflected light in the pupil area is an optical band or a light spot, the movement direction of the reflected light needs to be carefully judged, if the reflected light is different from the shaking direction of the optical band of the image-detecting mirror, the optical band of the image-detecting mirror needs to be rotated, the direction of the optical band is correspondingly adjusted to be consistent with the movement direction of the reflected light in the pupil area, at the moment, the direction of the optical band is one of the main meridian directions of the eye to be detected, and the other main meridian is in the direction perpendicular to the main meridian direction.
⑶ neutralizing the motion of two main meridian directions
After determining the two main meridian directions, observing the shadow motion states of the two directions.
If the two directions are both clockwise motion, the direction with low motion speed and higher degree of the spherical positive lens is neutralized firstly; if the two directions are in the reverse motion, the direction with high motion speed and low degree of negative sphere lens expected to be used is neutralized firstly;
if one direction is neutralized and the other direction moves clockwise, the principal meridian of the clockwise direction is neutralized firstly;
if one direction is neutralized and the other direction is reversed, recording the neutralization degree of the neutralized main meridian direction, and neutralizing the other main meridian direction by using a negative spherical mirror;
if one direction is clockwise motion and the other direction is anticlockwise motion, using an spherical mirror to neutralize the principal meridian of the clockwise motion;
if the two main meridian directions are both clockwise or counterclockwise, the direction in which the positive spherical power is higher or the direction in which the negative spherical power is lower cannot be expected, the spherical mirror can be used for neutralizing the shadow in one of the main meridian directions first, and at the moment, the shadow in the other main meridian direction is counterclockwise, the effect is correct, and if the forward motion is performed, the shadow in the main meridian direction is neutralized first.
The results of the examination may be recorded by cross-cursors and then scaled.
Thirdly, the adjustable multifunctional row mirror is applied to the adjustment reaction measurement of the MEM dynamic shadow detection method:
the accommodation response refers to the actual accommodation impulse that occurs when the human eye accommodates a stimulus to the near target. Whether the accommodative response is exactly equal to the accommodative stimulus amount is one of the criteria for measuring the accommodative function of the eye, and generally, the accommodative response amount is lower than the accommodative stimulus amount called accommodative lag, and the accommodative response amount is higher than the accommodative stimulus amount called accommodative lead.
The regulation response is a biological value that varies from person to person because the regulation response varies from person to person for the same regulation stimulus amount. Usually, the conjugate focus of the retina is slightly far away from the near-distance accommodation stimulus, i.e. the accommodation response of the eye is mostly slightly lower than the accommodation stimulus, which is expressed as accommodation lag, and the accommodation lag of the normal human eye is +0.50 +/-0.25D, and the accommodation lead is less common. The lag in regulation may also be understood as a result of the regulation information released by the target lagging behind the amount of the regulation stimulus.
The MEM retina dynamic examination is an objective method for adjusting response measurement, after the far-sightedness of the tested eye is corrected, a near-sightedness mark card is selected according to the best near-sightedness of the tested eye, the near-sightedness mark card (shown in a figure) is pasted beside a peephole of a video examination mirror and is placed at a position 40cm away from the tested eye, the tested eye is ordered to watch the video examination target, and an examiner observes the reflection light shadow of the retina of the tested eye through the peephole of the video examination mirror. If the retina reflected light of the measured eye moves clockwise to prompt the adjustment lag, the positive sphere lens displacement is gradually added until the retina reflected light is neutralized, and the added positive sphere lens displacement value is the adjustment lag of the measured eye; the retina reflected light moves reversely to prompt the adjustment advance, the negative spherical lens row lens is gradually added until the retina reflected light is neutralized, and the added negative spherical lens row lens value is the measured eye adjustment advance.
Checking and adjusting reaction checking operation steps by a MEM dynamic shadow checking method:
①, the far-reaching ametropia of the tested person is completely corrected.
②, the distance between the film-checking mirror and the eye to be tested is 40cm, the examination room is kept illuminated normally, the near-sighted mark card is stuck beside the peephole of the film-checking mirror, the near-sighted mark card in the previous line is selected according to the best near-sighted power of the eye to be tested, the right eye is tested firstly, and the left eye is tested secondly.
③, order the tested eye to watch the near vision mark card through the correcting lens, observe the reflection light movement of the retina of the tested eye by using the vertical projection light belt, and neutralize the movement by using the row mirrors (1-10).
④, adding positive spherical lens to neutralize reflected light under the condition that the reflected light of the detected retina moves clockwise, and adding negative spherical lens to neutralize reflected light under the condition that the reflected light of the detected retina moves clockwise, wherein the positive spherical lens is an adjustment lag, and the negative spherical lens is an adjustment lead.
⑤, because the dynamic refraction state is not stable enough, the examiner must quickly judge the nature of the retina reflection light shadow, and determine the adjustment response amount by means of the row lens and the ball lens which are quickly increased or decreased.
It should be noted that the above embodiments are only examples for clarity of illustration, and are not limiting, and all embodiments need not be exhaustive. All the components not specified in the present embodiment can be realized by the prior art. For those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (8)
1. The utility model provides a multi-functional row's mirror with adjustable, includes the mounting bracket, characterized by: be provided with two parallel tracks on the mounting bracket, every track the inside be provided with a lead screw, every be provided with on the lead screw with the lead screw passes through threaded connection's screw, every connect on the screw and stretch out the outer range mirror monomer of track, every the lead screw connect an adjust knob, the adjust knob of two lead screws is located respectively the both sides of mounting bracket.
2. The adjustable multifunctional row mirror as claimed in claim 1, wherein: each screw rod is arranged in the track through bearings at two ends.
3. The adjustable multifunctional row mirror as claimed in claim 1, wherein: a handle is arranged below the mounting rack.
4. The adjustable multifunctional row mirror as claimed in claim 1, wherein: and limiting baffles are arranged on two sides of the track.
5. The adjustable multifunctional row mirror as claimed in claim 1, wherein: and the two row mirror monomers are respectively provided with identification layers with different colors.
6. The adjustable multifunctional row mirror as claimed in claim 1, wherein: each lens-arranging monomer is provided with a plurality of lenses with different diopters, and the lenses are all negative spherical lenses or all positive spherical lenses.
7. The adjustable multifunctional row mirror as claimed in claim 6, wherein: the negative spherical lens comprises lenses with the luminosity of-0.50D, -1.00D, -1.50D, -2.00D, -2.50D, -3.00D, -3.50D, -4.00D and-5.00D.
8. The adjustable multifunctional row mirror as claimed in claim 6, wherein: the spherical correcting lens comprises lenses with the luminosity of 0.50D, 1.00D, 1.50D, 2.00D, 2.50D, 3.00D, 3.50D, 4.00D and 5.00D.
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| CN201920822456.4U CN210383871U (en) | 2019-06-03 | 2019-06-03 | Adjustable multifunctional row mirror |
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| CN201920822456.4U CN210383871U (en) | 2019-06-03 | 2019-06-03 | Adjustable multifunctional row mirror |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113143198A (en) * | 2021-04-20 | 2021-07-23 | 温州医科大学眼视光研究院 | Prism row lens inspection device for strabismus inspection |
| CN117481592A (en) * | 2023-11-16 | 2024-02-02 | 广州视景医疗软件有限公司 | Visual function checking method based on positive and negative relative adjustment of VR equipment and VR equipment |
-
2019
- 2019-06-03 CN CN201920822456.4U patent/CN210383871U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113143198A (en) * | 2021-04-20 | 2021-07-23 | 温州医科大学眼视光研究院 | Prism row lens inspection device for strabismus inspection |
| CN117481592A (en) * | 2023-11-16 | 2024-02-02 | 广州视景医疗软件有限公司 | Visual function checking method based on positive and negative relative adjustment of VR equipment and VR equipment |
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