Light Brush Therapy Apparatus

Abstract

The invention provides light brush therapeutic equipment. The equipment comprises a blue optical filter, a polarizing film, a controllable optical rotation component, an eyepiece, and a control device connected with the controllable optical rotation component arranged in sequence, wherein incident light enters from the blue optical filter to obtain polarized light through the polarization film; the polarized light passes through the controllable optical rotation component which controls the polarized light to deflect according to the cyclical control signal output by the control device and then exits from the eyepiece; the polarization direction of the output polarized light rotates or sways in a preset angle range under the function of the control signal. The equipment is simple in structure, low in cost, small in noise, light and handy as well as agile, low in failure rate, and high in regulate and control precision.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of optics, in particular to an optical brush therapeutic apparatus applied to the treatment of amblyopia in ophthalmology. [0003] 【Background technique】 [0004] The physiological principle of the Light Brush Therapy is based on the momentary Haidinger brush effect. The momentary Haidinger's brush effect means that when one eye of the therapist looks at a strong blue light through a rotating polarizer, an image similar to a high-speed rotating propeller can be continuously seen near the center of the eye's gaze direction. Instant Haidinger's brush effect, we referred to as light brush effect. The brushing effect occurs only on the fovea, which is the most visually sensitive area of ​​the eye. The patient looks at a brush-like or propeller-like image from the eyepiece of the light brush therapy device. This effect only appears in the macular area of ​​the retina, which is the most sensitive to vision. By ga...

AI Technical Summary

Problems solved by technology

This type of light brush therapy instrument often produces relatively large noise due to the use of motors. At the same time, due to the use of motion mechanisms, the structure is very complicated and cumbersome, the production cost is high, and the imaging control accuracy of the instrument is poor, and the failure rate of the instrument is relatively high.

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