JP3205691U - Eye test tool - Google Patents

Abstract

Provided is a visual acuity test tool capable of easily and accurately measuring visual acuity even when the cognitive ability and speech ability of subjects such as infants and persons with disabilities are not sufficiently developed. A single vision test tool capable of arbitrarily changing the angle and type presented to a subject, and a plurality of vision test answering tools corresponding to each angle and type of the test tool The answering tools Z1 to Z4 are independent in the vertical direction, and both the questioning tool and the answering tool can be installed at a position where they can be seen in parallel or close to the subject's line of sight. Therefore, it was made possible for the examinee to perform a vision test without being confused. [Selection] Figure 6

Description

  The present invention relates to an inspection tool capable of easily and accurately measuring visual acuity even if the cognitive ability of a subject such as an infant or a disabled person is not yet sufficiently developed.

Technical background

  In general visual acuity measurement, chart tables with various sizes of Landold's ring targets are often used, but if infants and people with disabilities are not cognitively developed or have no speech, understand the testing method. Sometimes this is difficult.

  In addition, pictograms imitating the silhouette of animals for infants and people with disabilities and pictograms with silhouettes of the index finger or the arrow may be used. It will be necessary to convert values later.

  In addition, inspection tools such as Utility Model Document 1 or Patent Document 1 have been proposed, but all of them apply patterns that are not so familiar in the field of eyesight inspection such as dots and stripes. However, problems remain such as the familiarity of the inspector and the cognition of the subject.

Utility model literature

Utility model document 1

Japanese Utility Model Publication No. 06-029503

Patent Literature

JP 2003-038440 A

  The present invention has been made in view of the above-mentioned problems and the like. Basically, it is easy and accurate even if the cognitive ability is undeveloped or there is no speech such as an infant or a handicapped person while using the Landold ring target. An inspection tool capable of measuring visual acuity is provided.

  In the present invention, as a tool on the side of the inspector, instead of a chart table in which the Landold ring targets of multiple sizes and multiple cutout position angles are written, only one is entered on a card or model (hereinafter referred to as a questioning tool) In this state, it is presented to the subject for use as an examination question. In addition, since the information given to the subject can be minimized by showing the questioning tool alone, unnecessary confusion can be avoided.

  It is desirable that the Landolde ring target shown in the questioning tool is prepared in several different sizes as needed for the examination. Even when characters, symbols, or silhouettes of objects such as animals are used for inspection, it is desirable that a plurality of types be prepared.

  The examiner shows this questioning tool so that it can be seen from the subject's line of sight in the horizontal direction, that is, from the front, and at that time, the Landold ring target is moved to an arbitrary position angle, or if it is a silhouette, the examination is advanced. To go. In addition, although it is easiest for the examiner to present the questioning tool by hand, it may be hung from above or leaned against a wall.

  In normal visual acuity tests, subjects generally respond to questions from the examiner with words and pointing, but the subject is undeveloped or uninformed in terms of cognitive abilities such as infants and people with disabilities. If there are no words, it may be difficult to get the correct answer. For this reason, a voice substitute means is selected by selecting an answer from a plurality of answer tools placed in front of the subject.

  In addition, although the method of selecting a card has been tried in an actual examination place, when the card is simply placed on a table (flat placement), the subject's eye movement is large, making it easier to see However, this will be explained in detail later. Further, it is difficult to grasp the card selected by the subject from the position of the inspector located far away.

  For this reason, the answering tool is placed on a table or the like provided in front of the subject so that the subject can easily see it, but the answering tool is filled with the same characters or figures on both sides. The result of the selection made by the subject can be understood at the same time by the examiner on the opposite side of the answering tool.

  In addition, although the individual tools for answering can be placed more freely, they can be connected or can be connected in consideration of ease of cleaning and prevention of loss. Or conversely, the stand unit may be separated from the answering tool.

  As mentioned above, the questioning and answering tools for eyesight testing according to the present invention can be used easily and accurately even when the cognitive ability is underdeveloped or there is no speech, such as infants and people with disabilities, using the Landold ring target. Visual acuity measurement can be performed. Further, it is a vision test tool that is very versatile even when characters and figures other than the Landold ring target are used.

It is a perspective view of the question tool. It is a perspective view showing another form of the question tool. It is a perspective view showing another form of a question tool. FIG. 6 is a perspective view of an answering tool and a state diagram when viewed from the opposite side. It is the perspective view showing another state of an answer tool, and a state figure at the time of seeing from the opposite side. It is a conceptual diagram showing the desirable situation at the time of an inspection using the inspection tool of the present invention. It is a conceptual diagram showing the undesirable situation at the time of a test | inspection.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

  The question tool Y is mainly shown to the subject A when the examiner Q holds it in his / her hand, but in FIG. 1, since it is card-shaped, the symbol F is drawn on the surface based on the Landold ring index. It is. In addition, although the size of the Landolde ring target has shown three types like (A)-(C) as an example, it is not limited to this, but only the part necessary for the measurement scale of the visual acuity test is prepared.

  4 so that the reverse side (examiner Q side) of the answering tool Z in FIG. 4 shows the same direction as the symbol F with respect to the symbol F written on the front surface of the question tool Y (examinee A side). Symbol F ′ is drawn. In the case of inspection using characters, animal silhouettes, etc., the directionality is not questioned.

  As another example of the questioning tool, in FIG. 2, a model of the Landolde ring target is formed (cut out), and in FIG. 3, a fish silhouette is drawn on the card as another example.

  Since the answering tool Z is placed on the table T or the like, a stand S is provided on the lower surface thereof as shown in FIG. Although the shape and number of the stand S are not particularly defined, it is a condition that the answering tool Z can stand by itself and does not hinder the visual recognition of the drawn symbols and the like.

  As another example of the answering tool, FIG. 5 shows a shape in which cards are connected in the horizontal direction, and characters are drawn on the surface thereof. In this example, four cards are connected in contact with each other, but only a part of the cards may be connected with a sheet-like or bar-like one by appropriately separating the cards. In addition, there is an advantage that it is easier to clearly distinguish the answer of the subject A by separating the cards.

  Next, in FIG. 6, an actual visual acuity test using the Landolde ring target is assumed. First, the inspector Q has a questioning tool Y in his / her hand, and changes the position angle at the time of an inspection question. By doing so, a response is requested to the subject A. At this time, it is desirable to show the question tool Y at the same height as the eye E of the subject A, that is, at a parallel position.

  The subject A visually selects the question tool Y and selects one of the answering tools Z1 to Z4 that are considered to be the same on the table T and indicates them with a finger or the like, or Hold in hand. Since the answering tools Z1 to Z4 are self-supporting as described above, they can be visually recognized from the subject A from the front as shown by the eye line e1. Therefore, it becomes easy to recognize.

  At this time, for example, when simple card-like D1 to D4 are laid flat on the table T as shown in FIG. 7, the movement of the eye E of the subject A is large, so the question tool Y and the cards D1 to D4 It becomes difficult to directly compare the two. In addition, since the appearance is visually distorted as shown by the line of sight e2, it is difficult to derive an accurate answer.

  Inspector Q grasps the contents written on the back side of inspection tool Z selected by examinee A (when viewing from the side of examinee A as a table) and checks whether the answer is correct. Check. By repeating these series of operations while changing the size and type of the symbol F written on the surface of the question tool Y, the inspection is sequentially advanced.

  In the above example, the answering tool Z is placed on the table T in four directions as Landold ring targets. However, the number and the position angle of the notch are not particularly limited.

  Furthermore, when using a silhouette or illustration as shown in FIG. 3 instead of the Landolde ring index, it is desirable to prepare a plurality of sizes and types as necessary.

  The specific explanation of the present invention is as described above. However, by using the question tool Y and the answer tool Z, the most common method for measuring the visual acuity is the ability to recognize the most common Randolde test. It can be performed easily and accurately even for infants or persons with disabilities who have not yet developed or spoken. Furthermore, the visibility can be remarkably improved even in a method that does not use the Landolde ring target.

Q examiner A subject (infant, person with a disability)
E eye line e1 subject eye in the present invention e2 subject eye in the conventional method Y question tool Z answer tool Z1 to Z4 multiple answer tools D1 to D4 multiple simple (conventional) answers Card F Symbol F 'Symbol seen from the back side (inspector side) S Self-supporting stand for answering tool T Table

Claims (7)

  A visual examination test tool that allows an examiner to arbitrarily change the angle to be presented to the subject, and a plurality of visual examination response tools corresponding to each angle of the test tool, A visual acuity characterized in that the answering tool is self-supporting in the vertical direction, and both the questioning tool and the answering tool can be installed at a position where they can be seen in parallel or close to the subject's line of sight Inspection tool.   A visual examination test tool with a silhouette and a plurality of types of visual test answer tools including the silhouette written in the test tool, wherein the response tool is self-supporting in the vertical direction; And the answering tool can be installed at a position where it can be viewed in parallel or close to the line of sight of the subject.   3. The visual acuity testing tool according to claim 1, wherein the questioning tool is a card on which a single character or graphic is written.   3. The visual acuity inspection tool according to claim 1, wherein the questioning tool is a model shaped like a single character or figure.   3. The answering tool according to claim 1, wherein the answering tool is a plurality of independent cards each having one angle or each type of character or figure corresponding to the questioning tool. Eyesight testing tools.   The answering tool is characterized in that a plurality of cards each having one angle or each type of character or figure corresponding to the questioning tool are connected in the horizontal direction. Item 3. The eyesight inspection tool according to Item 2.   The answering tool is characterized in that characters and figures are written on both sides thereof which are self-supporting in the vertical direction, and information which can be visually recognized by the examinee is also visible from the inspector side as well. The visual acuity test tool according to claim 1 or claim 2 and claim 5 or claim 6.

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