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Ophthalmologic apparatus and method of controlling the same

An ophthalmic device and technology of the control unit, which is applied in the fields of ophthalmoscope, medical science, and equipment for testing eyes, etc., can solve the problems of longer examination time and burden on the examinee, and achieve the effect of shortening the required time.

Active Publication Date: 2020-02-21
KK TOPCON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the conventional ophthalmic apparatus, although a plurality of examinations etc. can be performed, each examination etc. are performed sequentially
For example, in an ophthalmic device that can perform refractive power measurement and OCT measurement, each measurement is performed sequentially, so there is a problem that the examination time becomes longer and the subject feels a burden

Method used

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  • Ophthalmologic apparatus and method of controlling the same
  • Ophthalmologic apparatus and method of controlling the same
  • Ophthalmologic apparatus and method of controlling the same

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Experimental program
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no. 1 approach

[0043] The ophthalmic apparatus of the first embodiment includes a plurality of optical systems for performing a plurality of examinations and measurements, and can simultaneously perform a plurality of examinations and the like while simultaneously presenting fixed optotypes for performing a plurality of examinations and the like to the subject's eye. In the first embodiment, a common objective lens is provided in a plurality of optical systems, and a plurality of inspections and the like are performed using light having different wavelength ranges from each other. Hereinafter, an ophthalmic device capable of simultaneously performing reflectance measurement and OCT measurement among a plurality of objective measurements will be described, but the embodiments described below can be applied to combinations other than reflectance measurement and OCT measurement.

[0044]

[0045] figure 1 A structural example of the optical system of the ophthalmic apparatus of the first embo...

no. 2 approach

[0179] In the first embodiment, the case where the fixed optotype for areflection measurement and the fixed optotype for OCT measurement are independently moved has been described, but the configuration of the ophthalmic device according to the embodiment is not limited to this. For example, when the spot size of the light from the fixation light source projecting the fixed optotype for OCT measurement is very small, it can be moved integrally with the fixed optotype for reflective measurement. Hereinafter, the configuration of the ophthalmic apparatus of the second embodiment will be described focusing on points of difference from the first embodiment.

[0180] Figure 6A A structural example of the fixation unit 40 of the second embodiment is shown in . exist Figure 6A in, right with figure 1 The same parts are denoted by the same reference numerals, and explanations thereof are appropriately omitted.

[0181] The first fixed optotype projection system 41A includes a ha...

no. 3 approach

[0189] The structure of the fixation projection system 4 of the embodiment is not limited to the structure described in the first embodiment or the second embodiment. Hereinafter, the configuration of the ophthalmic device according to the third embodiment will be described focusing on points of difference from the second embodiment.

[0190] Figure 7 A structural example of the fixation unit 40 of the third embodiment is shown in . exist Figure 7 in, right with figure 1 or Figure 6A The same parts are denoted by the same reference numerals, and explanations thereof are appropriately omitted.

[0191] The first fixed optotype projection system 41A includes a half mirror 42A, a transmissive optotype chart 43A, and a light source 45A for illumination. From the illumination light source 45A toward the dichroic mirror 83 , the half mirror 42A, the optotype 43A, and the relay lens 44 are arranged in this order.

[0192] The second fixed sight target projection system 41B i...

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Abstract

The invention provides an ophthalmologic apparatus and a control method thereof. In the ophthalmologic apparatus capable of performing refractive power measurement and OCT measurement, the time required for measurement and the like can be shortened. The ophthalmologic apparatus includes a refractometry optical system, an OCT optical system, a fixation projection system, and a controller. The refractometry optical system is configured to project light onto a subject's eye and to detect returning light from the subject's eye. The OCT optical system is configured to split light from an OCT lightsource into measurement light and reference light, to project the measurement light onto the subject's eye, and to detect interference light between returning light of the measurement light from the subject's eye and the reference light. The fixation projection system is configured to simultaneously project a first fixation target and a second fixation target onto the subject's eye, a visual angleof the second fixation target being narrower than a visual angle of the first fixation target. The controller is configured to control the refractometry optical system and the OCT optical system to simultaneously perform a refractometry and an OCT measurement.

Description

technical field [0001] The present invention relates to an ophthalmic device and a control method thereof. Background technique [0002] There are known ophthalmic devices that can perform multiple inspections and measurements on the subject's eye. The inspection and measurement for the eye to be inspected include subjective inspection and objective measurement. Subjective inspection is the result obtained based on the responses from the examinee. The objective measurement is to obtain information about the subject's eye mainly using a physical method without referring to the response from the subject. [0003] For example, Patent Document 1 discloses an ophthalmic device capable of subjective inspection and objective measurement. In this ophthalmic apparatus, as objective measurement, measurement of the refractive power of the eye to be inspected and imaging and measurement using optical coherence tomography (Optical Coherence Tomography: OCT) can be performed. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/103
CPCA61B3/102A61B3/103A61B3/14A61B3/0091A61B3/032A61B3/12A61B3/0016A61B3/1225
Inventor 多多良阳子
Owner KK TOPCON
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