Strabismus examination device

A technology for inspection equipment and visual targets, which is applied in the fields of eye testing equipment, medical science, diagnosis, etc., can solve problems such as inaccuracy, and achieve the effect of saving time and making the inspection process fast and convenient

Pending Publication Date: 2021-07-23
上海青研科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of corneal light reflection is that it is not precise enough and may lead to misjudgment

Method used

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Experimental program
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Embodiment 1

[0071] Such as figure 1 As shown, a strabismus inspection device provided in this embodiment includes an optotype, an image capture and processing module, a pupil midline calculation module, and a strabismus measurement module. Wherein, the visual mark is displayed on the display 1 . It also includes an electronic computer 2, the image processing algorithm of the image capture and processing module 7, the pupil midline calculation module, and the strabismus measurement module are all programs running on the electronic computer 2.

[0072] In this embodiment, the image capture and processing module 7 includes two near-infrared cameras, respectively the left camera 3 and the right camera 4, and also includes two near-infrared LED point light sources with a light emission wavelength of 940nm, which are respectively the left light source 5 and the right camera 4. The light source 6 is located outside the near-infrared camera. The image capture and processing module 7 is located ...

Embodiment 2

[0104] A strabismus inspection device disclosed in this embodiment includes an optotype, an image capture and processing module, a pupil midline calculation module, and a strabismus measurement module. Wherein, the working principles of the visual mark, the image capture and processing module, and the pupil midline calculation module are similar to those in the first embodiment.

[0105] The device also includes a measurement module for the left and right symmetrical planes of the head, which can measure the three-dimensional plane equation of the left and right symmetrical planes of the head. The left-right symmetrical plane of the head is also called the median sagittal plane of the head, and the left half and right half of the human head are symmetrical about the left-right symmetrical plane. One method that can be used to measure the left and right symmetrical planes of the head is to fix the subject's head with a head fixing device so that the height of the left and right...

Embodiment 3

[0117] Physiophoria, also known as implicit strabismus, or phoria, is a potential deviation of the eye position that can be controlled by the fusion mechanism, and the deviation of the eye position occurs only when the fusion is broken. In addition to checking strabismus, this equipment can also check phoria.

[0118] This embodiment discloses a strabismus inspection device. The display position of the optotype is fixed, and it also includes an image shooting and processing module, a pupil midline calculation module, a strabismus measurement module, and a strabismus measurement module. It also includes an electronic computer, and the image processing algorithm of the image capturing and processing module, the pupil midline calculation module, the strabismus measurement module, and the phoria measurement module are all programs running on the electronic computer. The working principles of the image processing algorithm of the image capture and processing module, the pupil midl...

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Abstract

The invention provides a strabismus examination device. The strabismus examination device is characterized by comprising a visual target, aimage shooting and processing module, a pupil center line calculation module and a manifest strabismus measurement module, wherein the image shooting and processing module comprises at least two near-infrared cameras and at least two near-infrared light sources and is used for continuously shooting images of an eye area; and after angle alpha and angle beta are obtained through calculation by the manifest strabismus measurement module, if the angle alpha and the angle beta are not equal in size, the manifest strabismus measurement module judges that manifest strabismus is present. The strabismus examination device has the beneficial effects that the examination process is quick and convenient, the time of a doctor and an examinee can be saved, an examination result is objective and quantitative, and the strabismus examination device is not only suitable for adults, but also suitable for children and babies.

Description

technical field [0001] The invention relates to a strabismus inspection device, which belongs to the technical field of ophthalmic medical instruments. Background technique [0002] Strabismus is a common disease of ophthalmology. If patients with strabismus cannot be diagnosed and treated in time in childhood, it will not only affect their appearance in adulthood, but also easily cause visual dysfunction such as amblyopia, diplopia, and confusing vision. [0003] At present, the commonly used methods for examining strabismus in clinic are cover test or Hirschberg test. [0004] The main process of the covering method inspection is: let the patient fixate on the visual mark, the doctor covers the subject's single eye with a blindfold, and observes whether the eyeball of the opposite eye moves; Whether the eyeball moves. Or cover one eye with a blindfold, and then quickly move to the other eye, repeating this many times, and observe whether there is eye movement. If it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/08A61B3/00
CPCA61B3/0041A61B3/0091A61B3/085
Inventor 杜煜
Owner 上海青研科技有限公司
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