JPH07143962A - Optometric apparatus - Google Patents

Abstract

PURPOSE:To enable bar coding of practical optometry data by turning a measuring data of a refraction power to numerical one while the measuring data converted in compression to reduce numerical service digits is printed in bar codes, CONSTITUTION:By operating a controller 8, an operator switches an optical element corresponding to a selection switch to an inspection window 4 to inspect eyes, the operator repeats the operation of the switch gaining responses from a subject until the subject can recognize a target for inspection right visually to obtain optometry data such as spherical diopter, diopter of astigmatism, axial angle of astigmatism and prism diopter necessary for the correction of the eyes to be inspected. Upon the end of the inspection of left and right eyes to be inspected, a printing switch of the controller 8 is depressed. As a result. a control section 5 works to turn the optometry data to numerical one while converting the data in compression to reduce the numerical service digits. Thus, the optometry data converted in compression are converted into three sets of bar-code signals and printed out in a bar code together with the inspection data from a printer 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optometry apparatus for examining an eye to be examined, and more particularly to an optometry apparatus for outputting optometry data of the subject's eye as a bar code.

[0002]

2. Description of the Related Art Examination data necessary for prescribing a spectacle lens are spherical refractive power, cylindrical surface refractive power, astigmatic axis angle, prism diopter, etc. Usually, this test is a subjective eye refractive power measuring device. Done by The optometry data obtained in this way can be used by the inspector to examine the subject's card or Transferred to prescriptions, order slips, etc. However, these transcribing tasks are time-consuming and have problems such as transcription errors, reading errors, and input errors. In order to improve this point, in recent years, a method has been proposed in which measurement data is converted into a barcode, printed out, and read by a barcode scanner to perform data management and lens ordering by a computer system.

[0003]

However, in the conventional bar code of optometry data, the numerical values such as the spherical refractive power, the cylindrical surface refractive power, the astigmatic axis angle, and the prism power are simply converted into binary numbers as they are. It was something I was told.
In this method, the number of digits of the barcode is too large, and many barcodes are required to convert the data for one subject into the barcode. This not only takes time and effort to read with a bar code scanner, but also takes valuable computer storage capacity in data processing, and communication time and data transfer to a remote host computer. It is not practical because it has drawbacks such as high communication costs. SUMMARY OF THE INVENTION It is an object of the present invention to provide an optometry apparatus that realizes practical bar code conversion of optometry data in view of the above-mentioned drawbacks of the prior art.

[0004]

In order to achieve the above object, the present invention is characterized by having the following configuration. (1) In an optometry device for measuring the refractive power of an eye to be inspected,
Data converting means for converting the measurement data of the refractive power into numerical data and compressing and converting so as to reduce the number of digits used in the numerical value, and the compression-converted measuring data as a bar code. And a printing means for printing the printed matter.

(2) The data converting means of (1) is characterized in that it is a converting means for compressing and converting the refractive power measurement data based on the measurement step and the measurable range.

(3) The data conversion means of (1) is characterized in that the spherical power, the cylindrical power, the astigmatic axis angle, and the addition power are compressed so that they can be displayed as one bar code.

(4) The printing means of (1) is a bar code of three sets of left eye measurement data excluding prism power, right eye measurement data excluding prism power, and prism powers of left and right eyes. An optometry device for printing.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the optometry apparatus of this embodiment. Reference numeral 1 denotes a subjective optometry apparatus main body, and the subjective optometry apparatus main body 1 has a lens unit section 2 and a lens unit moving section 3. The left and right lens unit parts 2 store a plurality of discs on which optical elements having spherical refractive power and columnar refractive power are arranged, and the discs and the optical elements arranged on the discs are rotated by a motor. Thus, the optical system having desired optical characteristics is switched and arranged in the inspection window 4.
The subject visually recognizes an examination target (not shown) through an optical element arranged in the examination window 4. Reference numeral 5 is a control unit that controls the entire apparatus, and 6 is a printer drive circuit that drives the printer 7. Reference numeral 8 denotes a controller, which is provided with various switches and print switches for switching and arranging the optical elements of the subjective eye examination apparatus body 1. The examiner operates various switches of the control unit 8 to perform an optometry.

FIG. 2 is a diagram showing a print example in which the measurement result by the subjective optometry apparatus is printed out. Reference numeral 10 is a print sheet, 11 and 12 are alphanumeric characters of spherical power, astigmatic power, astigmatic axis angle, addition power and prism power of the right and left eyes, respectively, and 13 is a pupillary distance. Regarding the direction of the prism power, "I" and "O" indicate base-in and base-out, and "D" and "U" indicate base-down and base-up. 1
4 and 15 are spherical power and astigmatic power of the right and left eyes,
Each bar code of the data of the astigmatic axis angle, the addition power and the interpupillary distance is shown, and 16 is the bar code of the prism data of the left and right eyes.

Bar code conversion of each optometry data is performed as follows. The bar code of this embodiment adopts a standard JAN code (13 digits) and corresponds to 13 decimal digits. The 13th bar code is the modulus 1
It is a number calculated by the check digit calculation method of 0, and is provided to check whether or not the barcode can be read accurately when reading the barcode.
First, a method of converting the optometry data excluding the prism power into a standard JAN code barcode will be described. The measurement range and the measurement unit step of the inspection item of the apparatus of this embodiment are shown in FIG. 3, and based on this, the optometry data is assigned to the bar code of each digit as shown in FIG. The bar code of each digit will be specifically described.

The first from the left of the bar code represents the distinction between the right eye and the left eye and the second digit of PD (distance between pupils) by one digit. The measurement range of PD (distance between pupils) is 48 to 80 mm as shown in FIG. 3, and the second digit of PD is 4, 5, 6,
It is composed of five numbers 7 and 8. Therefore, the decimal numbers “0”, “1”, “2”, “3”,
“4” corresponds to the numerical values of 4, 5, 6, 7, and 8 in the second digit of PD (interpupillary distance) of the right-eye data, respectively, and is decimal number “5”, “6”, “ 7 ”,“ 8 ”,
"9" is 4, 5, 6, in the second digit of PD of the left eye data
It is possible to correspond to the numerical values of 7 and 8, respectively. Thereby, the first digit of the barcode represents the distinction between the right eye and the left eye, and the second digit of PD (pupil distance) is expressed.

The second corresponds to the first digit of the PD. PD is 1mm step, so it is 1 of barcode
"0" to "9" in the base 0 can correspond to the numerical values 0 to 9 as they are. The third bar code represents "+", "-", and the second digit of SPH (spherical power). SPH
The measurement range of (spherical power) is −29.00 to +26.7.
Since it is 5, the second digit is composed of three numbers 0, 1, 2. Decimal number "0" of barcode,
"1" and "2" correspond to the numerical values of +0, +1 and +2,
Decimal numbers "3", "4", and "5" of barcode are-
Corresponds to the numerical values of 0, -1, and -2. Fourth is SPH
Correspond directly to the first digit of (spherical power). 5
The second corresponds to a numerical value below the decimal point of SPH (spherical power). Since SPH (sphere power) is usually 0.25D step, the decimal number "0" of the barcode is set to 0,
“2” can be represented by 0.25, “5” by 0.50, and “7” by 0.75. When SPH (sphere power) is 0.125D step, in addition to the above, "1" is changed to 0.125 and "3" is added.
To 0.375, "6" to 0.625, and "8" to 0.
It can be expressed in correspondence with each of the numerical values of 875.

The sixth number represents the first digit of CYL (astigmatic power). That is, decimal numbers "0", "1", "2", ... "7", "8" of the barcode are respectively -0, -1, -2, ...- 7, -8. Corresponds to each. As a method of displaying the astigmatic power,
There are three types: mode, plus mode, and mixed mode. In the case of a device whose display method can be selected, it is displayed as follows. That is, as in the present apparatus, the bar code display may be unified into one display mode, and the type of the display mode is the third digit of AXIS (astigmatism power). In addition to the display of (0 or 1), it may be displayed by using the eighth bar code described later (for example, 0 or 1 in the minus mode,
2 or 3 when in positive mode.

The seventh bar code corresponds to a numerical value below the decimal point of CYL (astigmatic power) and its expression is SPH.
This is the same as the fifth bar code that represents a numerical value that is a decimal number or less of (spherical power). The 8th, 9th and 10th represent the numerical values of the 3rd digit, the 2nd digit and the 1st digit of AXIS (astigmatism power), respectively, and correspond to the decimal numbers of the bar code as they are. The eleventh bar code is A
It corresponds to the second digit of DD (additional power) and corresponds to the decimal number of the bar code as it is. The twelfth is
It corresponds to the numerical value below the decimal point of ADD (additional power), and SP
This is the same as the fifth bar code showing the decimal point of H (sphere power) and below.

Next, the prism power data is also converted into a standard JAN code bar code as shown in FIG.
The prism power data of the right eye is assigned to the first to fourth barcodes, and the prism power data of the left eye is assigned to the fifth to eighth barcodes. The first and second barcodes indicate the base-in (I) and the base-out (O) and the prism power. In the case of base-in (I), the value of “data × 2” is described, and in the case of base-out (O), the value of “data × 2 + 40” is described. For example,
The base-in (I) 20 prism diopter is calculated as 40 and is bar coded as "4" and "0" at the first and second. The base out (O) 3.5 prism diopters are designated as "4" and "7". The 3rd and 4th represent the distinction between base down (D) and base up (U), and the prism power. In the case of base down (D), the value of “data × 2” is set, and in the case of base up (U). Indicates the value of “data × 2 + 40”.

The 5th to 8th bar codes represent the prism power of the left eye, the 5th and 6th are the distinction between base-in (I) and base-out (O), and the prism powers are the first and second notations. The same notation is used, and the 7th and 8th barcodes are described according to the 3rd and 4th notation methods. The 9th to 11th barcodes are empty data,
It is set to "0". The twelfth is an identification code of the prism data, which is fixed to "9". The 12th digit in the bar code display of the data of spherical power, astigmatic power, astigmatic axis angle, addition power, and interpupillary distance does not use the decimal number "9" of the bar code, so it is erroneously read by comparing it. Can be prevented. Note that if there is data for only one eye, the data for the side without data is set to “0”.

The operation of the optometry apparatus having the above configuration will be briefly described. The inspector operates the controller 8 to switch the optical element corresponding to the selection switch to the inspection window 4 to perform the optometry. The examiner repeats the switch operation while obtaining the response of the examinee until the examinee can visually recognize the examination target properly, and the spherical power, the astigmatic power, the astigmatic axis angle, and the prism power necessary for correcting the subject's eye. Obtain optometry data such as. When the left and right eye inspections are completed and the print switch of the controller 8 is pressed, the control unit 5 converts the inspection data into three sets of bar code signals by the method described above, and prints out together with the inspection data from the printer 7 ( If the prism power is neither left nor right, the bar code is not displayed.) The printing paper printed out by the bar code is used as follows. For example, it is affixed to a lens order form or the patient chart itself so that it can be read by a scanner when necessary. In addition, the data read by the scanner is input to the computer and used as data for ordering and management.

Although the above embodiment shows an example in which the optometry data from the subjective optometry device is compressed and converted by the bar code and printed out, the present invention is not limited to this, and various modifications are possible. is there. For example, when transferring the measurement data in the objective eye refractive power measurement device performed prior to the subjective optometry to the subjective optometry device, or by measuring the spectacle lens used by the subject with a lens meter, the In the case of transferring data to the subjective optometry apparatus, the measurement data is compressed and converted into a barcode and printed out as shown in the present embodiment, and it is easily and efficiently read by the subjective optometry apparatus. Data transfer is possible. These changes are included in the present invention as long as the technical idea is the same.

[0019]

According to the present invention, the optometry data can be compressed into a barcode with a minimum of decimal numbers while taking into consideration the steps and range peculiar to the optometry data, and the barcode reading, data processing, etc. It is possible to improve efficiency.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an optometry apparatus according to an embodiment.

FIG. 2 is a diagram showing a print example in which a measurement result obtained by the subjective optometry apparatus is printed out.

FIG. 3 is a diagram showing a measurement range and a measurement unit step of an inspection item of the apparatus of this embodiment.

FIG. 4 is a diagram for explaining a method of converting optometry data excluding prism power into a barcode.

FIG. 5 is a diagram for explaining a method of converting optometry data of prism power into a barcode.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Subjective optometry apparatus 5 Control unit 7 Printer 8 Controller 10 Printing paper 14 Bar code of data of spherical power, astigmatism power, astigmatic axis angle, addition power and interpupillary distance of the right eye 15 Spherical power of the left eye, astigmatism power, Bar code of astigmatic axis angle, addition power and interpupillary distance data 16 Bar code of prism data for left and right eyes

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Claims (4)

[Claims] 1. An optometry device for measuring the refractive power of an eye to be inspected, wherein the data conversion is such that the measured data of the refractive power is processed into numerical data and is compressed so as to reduce the number of digits used. An optometry apparatus comprising: a means and a printing means for bar code printing the compression-converted measurement data. 2. The optometry apparatus according to claim 1, wherein the data converting means is a converting means for compressing and converting refracting power measurement data based on a measuring step and a measurable range. 3. The optometry apparatus according to claim 1, wherein the data converting means compresses the spherical power, the cylindrical power, the astigmatic axis angle, and the addition power so that they can be displayed as one bar code. . 4. The printing means according to claim 1 prints as three sets of bar codes of left eye measurement data excluding prism power, right eye measurement data excluding prism power, and prism powers of left and right eyes. An optometry device characterized by: