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Fine focusing-based ophthalmic measurement system and measurement method thereof

A measurement system and measurement method technology, used in medical science, eye testing equipment, diagnosis, etc., can solve problems such as being susceptible to eye movement, high cost, and affecting imaging quality.

Pending Publication Date: 2020-09-11
SHENZHEN CERTAINN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent document fails to achieve optical path compensation and focus position adjustment for tissues with different depths in the anterior chamber, which affects the OCT imaging quality of each tissue in the anterior segment
[0008] Time-domain OCT technology is low in cost, and the detection depth can be made deeper, but its imaging speed is slow and is easily affected by eye movements; while frequency-sweeping OCT technology has fast imaging speed and deep detection depth, but its cost is high
Frequency-domain OCT technology has limited imaging depth, but its imaging speed is comparable to frequency-sweeping OCT technology, and it has a greater cost advantage

Method used

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  • Fine focusing-based ophthalmic measurement system and measurement method thereof
  • Fine focusing-based ophthalmic measurement system and measurement method thereof
  • Fine focusing-based ophthalmic measurement system and measurement method thereof

Examples

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no. 1 example

[0077] refer to figure 1 with figure 2 , the present embodiment provides an ophthalmic measurement system and a measurement method based on fine-tuning, which are used for measuring the eye to be tested; wherein, the eye to be tested is a human eye. The measurement method of this embodiment is realized based on the ophthalmic measurement system of this embodiment. The ophthalmic measurement system of this embodiment includes a main body module 100 and a detection module 10 .

[0078] refer to figure 1 with figure 2 , the main body module 100 includes a light source 1101 , a coupler 1103 , a reference arm, a detector 1141 and a computer 1143 .

[0079] The light source 1101 is a weakly coherent light source, and the output light is about near-infrared light.

[0080] The coupler 1103 is a fiber coupler.

[0081] The reference arm includes a reference arm optical path lens 1121 and a reference arm mirror 1123 .

[0082] The detection module 10 can also be called a sampl...

no. 2 example

[0132] The difference between this embodiment and the first embodiment lies in that the optical path structure of the fine-focus device 1111 is different.

[0133] refer to Figure 16 , the microfocus device 1111 of this embodiment includes a fixed lens 11111, a movable lens 11113 and a translation mechanism (not shown). The fixed lens 11111 and the movable lens 11113 are arranged along the measurement optical path; for example, the fixed lens 11111 and the movable lens 11113 are arranged in sequence; of course, the movable lens 11113 can also be arranged before the fixed lens 11111 along the propagation direction of the measuring light. The drive device of the translational mechanism can use linear motors, stepper motors and voice coil motors.

[0134] The movable lens 11113 is quickly translated by the translation mechanism to achieve the effect of changing the focus position of the fine focus device 1111 .

no. 3 example

[0136] The difference between this embodiment and the first embodiment is that: Figure 17 , the fine focus device 1111 is arranged in the optical path of the anterior segment OCT optical path assembly 150 and replaces the first lens 1503 . In other embodiments, the first lens 1503 may also be retained, and a fine-focus device 1111 is additionally added in the optical path of the anterior segment OCT optical path assembly 150, the difference is that the focus range of the fine-focus device 1111 will change.

[0137] refer to Figure 19, in this embodiment, the anterior segment OCT optical path assembly 150 includes a first reflector 1501, a third reflector 1505, a fifth reflector 1507, a third lens 1509, a third beam splitter 1307, a fifth beam splitter 1309 and a connecting mirror 1501. Eyepiece 1311.

[0138] When performing OCT imaging of the anterior segment, the light emitted from the collimating mirror 1107 is reflected by the optical path switching scanning device 110...

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Abstract

The invention discloses a fine focusing-based ophthalmic measurement system and a measurement method thereof. The system comprises a main body module, a light path switching and scanning device, a first OCT light path assembly, a light path compensation device and a fine focusing device, wherein the main body module is used for providing the light path switching and scanning device with measuringlight; the light path switching and scanning device is used for propagating the measuring light to the first OCT light path assembly; the light path of the first OCT light path assembly is at least one part of a measuring light path; the fine focusing device is used for focusing the measuring light; and the light path compensation device is used for forming different light path compensation amounts for the first OCT light path assembly to simultaneously achieve light path compensation and focusing of different parts of a to-be-measured eye, so as to measure the different parts of the to-be-measured eye. The method is implemented on the basis of the system. According to the fine focusing-based ophthalmic measurement system and the measurement method thereof, light path compensation and rapid focusing of different parts of the to-be-measured eye can be simultaneously achieved, so as to measure the different parts of the to-be-measured eye.

Description

technical field [0001] The present application relates to the technical field of ophthalmology measurement, in particular to an ophthalmology measurement system and measurement method based on fine-tuning. Background technique [0002] Nowadays, more and more elderly people suffer from cataract eye disease, and implanting intraocular lens is an effective solution for cataract widely used at present. However, the calculation of intraocular lenses requires many parameters, such as corneal anterior and posterior surface curvature, corneal thickness, anterior chamber depth, lens thickness, lens anterior and posterior surface curvature, eye axial length, white-to-white distance, pupil diameter, etc. There are many parameters to be measured, but the above complete data can only be obtained after the detection of multiple medical devices. Therefore, if one piece of equipment can be realized, the medical equipment that can obtain the above-mentioned data will not only improve the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/10A61B3/14
CPCA61B3/102A61B3/14A61B3/0008A61B3/0016A61B3/0075
Inventor 蔡守东代祥松李鹏郭曙光吴蕾
Owner SHENZHEN CERTAINN TECH CO LTD