Phototherapy device for preventing and controlling myopia
A technology of prevention and control and phototherapy, applied in phototherapy, optics, ophthalmology treatment, etc., can solve problems such as macular damage and macular degeneration, and achieve the effects of preventing lesions, preventing and controlling myopia, and reducing oppression
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Embodiment 1
[0038] like Figure 4As shown, the diffuser plate 32 of the phototherapy device for myopia prevention and control is provided with a shielding plate 34 at the position corresponding to the macula of the patient's eyeball. Any of the lenses, painted lenses, opaque injection molded parts and opaque metal parts. By disposing a shielding plate 34 on the diffuser plate 32 to prevent light from irradiating the macula at the bottom of the patient's eyeball, the macula, which is more sensitive to light, is prevented from being directly irradiated, which can prevent damage to the macula during long-term use of the phototherapy device for myopia prevention and control.
Embodiment 2
[0040] A reflection grating is provided on the diffuser plate 32 of the phototherapy device for myopia prevention and control at a position corresponding to the macula of the patient's eyeball. Embodiment 2 replaces the shielding plate 34 in Embodiment 1 with a reflection grating, which can reflect most of the light directed to the macula at the bottom of the patient's eye back, thereby reducing the energy of the light directed to the macula at the bottom of the patient's eyeball.
Embodiment 3
[0042] Figure 5 It is a schematic diagram of the optical path of the concave lens of the phototherapy device for myopia prevention and control provided by the embodiment of the present invention. like Figure 5 As shown, a concave lens 35 is arranged in the light barrel 33 of the light therapy device for myopia prevention and control, and the concave lens 35 is used for diffusing the light emitted from the diffusion plate 32 . The macula is usually located near the center of the bottom of the eyeball. By arranging the concave lens 35 in the light tube 33, the light can be diffused from the center, and the light energy in the center area can be reduced.
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