JPH0221042Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an eye refractive power testing device for efficiently and reliably testing the eye refractive power of a large number of people.

[Prior art] Objective automatic ophthalmoscopes (autoreflex) are widely used as devices for measuring eye refractive power, but it is common to use a subjective ophthalmoscope in combination, but both are different from each other. There are large differences in the required measurement time due to differences in measurement methods. Therefore, while a subjective ophthalmoscope examines the eyes of one person, an objective automatic ophthalmoscope can measure the eyes of many people.

Conventionally, a subjective ophthalmoscope and an objective automatic ophthalmoscope were connected using a data communication cable, and the measured values of the objective ophthalmoscope were transferred to the subjective ophthalmoscope, and the corresponding lens was set as the initial value. There is a known device that reduces the time required for eye examination by setting

[Problems to be Solved by the Present Invention] It is true that in the above-mentioned apparatus, the time required for eye examination for one person is shortened. However, there remains the problem that the eye examination of the next subject cannot be started until the eye examination is completed using the subjective ophthalmoscope. In other words, unlike an objective automatic ophthalmoscope, a subjective ophthalmoscope examines the subject's eye from multiple angles.
Since the time required for the test cannot be drastically shortened, it is wasteful to keep the examiner and the test subject waiting during that time.

Although some modern objective automatic ophthalmoscopes have relatively large built-in memories for storing a large number of measurements, they are not used for data management purposes.
Even if we tried to connect this to a large number of subjective ophthalmoscopes for the purpose of data management, it would be impossible due to the size limitations of objective ophthalmoscopes. Moreover, when an objective automatic ophthalmoscope is connected to a plurality of subjective ophthalmoscopes, confusion arises as to which data belongs to which subject.

In view of the above-mentioned problems of the prior art, the first purpose of the present invention is to enable the subject to use preliminary refractive power measurement devices such as objective automatic ophthalmoscopes one after another without waiting, and to perform random measurements. The object of the present invention is to provide a device that can send data to a subjective optometrist.

The second purpose of this invention is to be able to immediately send the necessary data to the subjective ophthalmoscope without confusing the data even if one or more refractive power preliminary measuring devices and multiple subjective ophthalmoscopes are connected. Our goal is to provide equipment that can.

[Means for Solving the Problems] In order to achieve the above object, the eye refractive power testing device of the present invention includes: (1) a refractive power preliminary measurement device that measures a refractive power preliminary measurement value that approximates the prescription value of the eye to be examined; , a management number assigning means for assigning a management number for data recall corresponding to each preliminary refractive power measurement value; a storage means for storing the preliminary refractive power measurement value and the management number; a memory holder having a transmitting means for transmitting data to a refractive power reserve; a designation means for designating a management number for data recall corresponding to each preliminary refractive power measurement value; and a refractive power reserve corresponding to the management number designated by the designation means. A subjective ophthalmoscope comprising: a receiving means for receiving a measured value; and an adjusting means for adjusting an optical system so that a value based on the received preliminary refractive power measurement value becomes an initial value; It is characterized by comprising: a data communication line that connects the subjective ophthalmoscope and the memory holder, respectively.

(2) Furthermore, the subjective ophthalmoscope set forth in the above paragraph 1 is characterized by being a plurality of subjective ophthalmoscopes, each of which is connected to the memory holder through a data communication line. There is.

(3) Furthermore, the refractive power preliminary measuring device set forth in paragraph 1 is one or more objective automatic ophthalmometers and/or lens meters, and each objective automatic ophthalmoscope communicates data with the memory holder. It is characterized by being connected via a line.

[Example] Embodiments of the present invention will be described based on the drawings.

FIG. 1 is a schematic diagram of one embodiment of the present invention.
This is an example in which a base objective type automatic ophthalmoscope and three subjective ophthalmoscopes are connected via a memory holder 3.

1-1 and 1-2 are objective automatic ophthalmoscopes (abbreviated as autoref), which project a measurement target onto the fundus of the eye to be examined, and measure the objective eye of the eye based on the state of the target image. This is a device that measures refractive power. All or part of the objective automatic ophthalmoscope may be replaced with a lens meter. 5-1, 5-2, and 5-3 are subjective ophthalmoscopes, which adjust the optical system placed in front of the eye to obtain an appropriate visual acuity while presenting an eye chart to the eye to be examined. This is a device that measures subjective refractive power. These objective type automatic ophthalmoscopes 1-1, 1-2 and subjective ophthalmoscopes 5-1, 5-2, 5-3 are each connected to the memory holder 3 via a serial communication line.

The memory holder 3 is an objective type automatic ophthalmoscope 1-1, 1-
After assigning a unique management number to the measurement data scheduled to be transmitted from 2 and transmitting the management number to the refractive power preliminary measuring device, receiving and storing the measurement data,
It is configured to be able to send this to an objective type automatic ophthalmoscope. The details will be described later.

A circuit block diagram of memory holder 3 is shown in FIG. 2 in FIG.
Five connectors 6-1, 6-2, ... 6-5 for connecting the objective automatic ophthalmoscope and three subjective ophthalmoscopes via serial communication lines, and 5 connectors for controlling serial communication. Serial communication circuit 7-
There are 1, 7-2, ... 7-5. these are,
It is connected to a microcomputer circuit consisting of CPU8, ROM9, and RAM10. A program that performs the communication function of this device is stored in ROM9.

Reference numeral 11 denotes a battery for a backup circuit to ensure that the memory does not disappear even when the power is turned off.

In the embodiment of the above configuration, the operation will be explained in the third section below.
This will be explained based on the flowcharts shown in FIGS.

FIG. 3 is a flowchart of the objective automatic ophthalmoscope, FIG. 4 is a flowchart of the memory holder 3, and FIG. 5 is a flowchart of the subjective ophthalmoscope.

The case of using the objective automatic ophthalmoscope 1-1 will be explained.

The objective automatic ophthalmoscope presses a print switch (not shown in the figure) (in this embodiment, it is also used as a switch for printing, which will be described later) each time a measurement is completed, and by pressing this switch, the operations from step 22 to step 27 are performed. ) to send a predetermined signal to the memory holder 3 via the serial communication line 2-1 and the connector 6-1 (steps 22, 2
3). This signal is decoded by the CPU 8, ROM 9, and RAM 10, and the memory holder 3 sends a signal indicating that the data can be accepted to the objective type automatic ophthalmoscope along with a management number (hereinafter simply referred to as management number) for specifying the measurement data to be transmitted. (step 28, 2)
9). This management number is assigned in the order in which the memory holder 3 receives measurement data from the objective automatic ophthalmoscopes 1-1 and 1-2. For example, if the management number of the immediately preceding measurement data Dn is n, then step 28,
29, the management number sent back to be attached to the measurement data Dn+1 is n+1. In this way, even if a plurality of objective automatic ophthalmoscopes are used in parallel, specific measurement data and management numbers correspond one-to-one. I received the management number (Step 2)
4) The objective automatic ophthalmoscope 1-1 temporarily stores information in its built-in microcomputer circuit. Then, the measured data is transmitted to the memory holder (step 25). Next, the management number and the corresponding measurement data are printed out on paper (steps 26 and 27). The memory holder that has received the measurement data stores it in a position corresponding to its management number (steps 30 and 31).

Next, a method of reading data from the memory holder from the subjective optometrist will be explained.

While looking at the management number printed on the paper, the examiner operates the keyboard or other input means (not shown) of the subjective ophthalmoscope to enter the management number (step 3).
6, 42, 43), press the switch for reading the data of the subjective ophthalmoscope (step 44). As a result, the measurement data stored in the RAM 10 is read out (steps 32, 33, 34, 35) and sent to the subjective ophthalmoscope (steps 45, 46, 4).
7,48).

The subjective ophthalmoscope automatically adjusts its internal optical system so that it has optical characteristics corresponding to the read measurement data, and performs a subjective ophthalmoscopy using this value as an initial value.

In addition, for group examinations at schools, etc., group management can be facilitated by connecting a computer to the storage device and adding a statistical processing function.

[Effects of the invention] As is clear from the above explanation, according to the present invention, it is possible to perform eye examinations for a large number of people efficiently with a simple configuration, and also to perform subjective eye examinations by staggering the date and time from the preliminary measurement. At any time, the measurement data can be easily recalled to any subjective ophthalmoscope connected to the memory holder, thereby facilitating the eye examination. Further, it is possible to effectively utilize the characteristics of an objective automatic ophthalmoscope, a lens meter, etc.

[Brief explanation of the drawing]

FIG. 1 is a schematic layout diagram of an embodiment of the present invention, and FIG. 2 is a circuit block diagram of the memory holder shown in FIG.
FIG. 3 is a flowchart of the objective automatic ophthalmoscope, FIG. 4 is a flowchart of the memory holder, and FIG. 5 is a flowchart of the subjective ophthalmoscope. 1-1, 1-2...Objective automatic ophthalmoscope, 3...
Memory retainer, 5-1 to 5-3...Subjective ophthalmoscope,
6... Connector, 7... Serial communication circuit.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A preliminary refractive power measurement device that measures preliminary refractive power measurements that approximate the prescribed values of the eye to be examined, and a management number for data recall that corresponds to each preliminary refractive power measurement value. a memory holder having a management number assigning means for assigning a refractive power preliminary measurement value, a storage means for storing the preliminary refractive power measurement value and the management number, and a transmitting means for transmitting the management number to the refractive power preliminary measuring device; a specifying means for specifying a management number for data call corresponding to a measured value; a receiving means for receiving a preliminary refractive power measurement value corresponding to the control number specified by the specifying means; and a received preliminary refractive power measurement value. a subjective ophthalmoscope having an adjustment means for adjusting the optical system so that a value based on the initial value becomes an initial value; and a data communication line connecting the refractive power preliminary measuring device, the subjective ophthalmoscope, and the memory holder, respectively. An eye refractive power testing device comprising: (2) The subjective ophthalmoscope according to paragraph 1 is a plurality of subjective ophthalmoscopes, each of which is connected to the memory holder through a data communication line. Force testing device. (3) The preliminary refractive power measuring device referred to in paragraph 1 is one or more objective automatic ophthalmometers and/or lens meters, and each objective automatic ophthalmometer is connected to the memory holder and the respective data communication line. An eye refractive power testing device, characterized in that the eye refractive power testing device is connected to the