9 results about "Retina cell" patented technology

The utility model relates to the technical field of lenses, in particular to a spherical lens and cylindrical lens double-control fusion lens, which comprises a lens body and is characterized in that the lens body comprises a base layer I, and an anti-reflection layer, an ultraviolet-proof layer, an impact-resistant layer, a photochromic layer and a stain-resistant layer are arranged on the surface of the lens body. An anti-reflection layer is fixedly adhered to one side of the base layer I through a resin adhesive, and an ultraviolet-proof layer is adhered to the other side of the anti-reflection layer through the resin adhesive. According to the scheme, the functionality is remarkably improved through the multi-layer composite structure design (the anti-reflection layer, the ultraviolet-proof layer, the anti-impact layer and the like), in addition, the micro lenses of the first base layer and the second base layer are distributed in a staggered mode by rotating by 30 degrees, the one-person two-mirror alternate wearing mechanism (alternating every 2-4 weeks) is combined, fatigue of retina cells caused by fixed stimulation is avoided through dynamic out-of-focus stimulation, and the anti-fatigue performance of the retina cells is improved. Meanwhile, alternate recovery is promoted, so that myopia development is intervened more scientifically.

Disclosed are adeno-associated virus (AAV) capsid protein variants that have improved infectivity and transduction efficiency for target cells, and uses thereof. Specifically, the disclosure relates to AAV2 variant capsid proteins selected by directed evolution for gene delivery to retinal cells, recombinant AAV vectors comprising the same, and uses thereof as gene delivery vehicles to retinal cells.

The invention relates to the technical field of nursing materials, and discloses eye washing liquid for relieving eye fatigue and a preparation method thereof.The eye washing liquid is prepared from trehalose, taurine, sodium gualenate, sodium hyaluronate, ergothioneine, vitamin B12, vitamin B6, xanthophyll, mint, a humectant, a bacteriostatic agent, a chelating agent, a pH regulator and deionized water. Through the synergistic effect of the first synergistic composition and the second synergistic composition, retina cell injury induced by blue light can be effectively repaired, the repairing effect is superior to that of simple addition of a single component, blue light oxidative injury is repaired through a multi-target synergistic mechanism, a three-layer structure of a tear film lipid layer, a water layer and a mucoprotein layer can be reconstructed, and the repairing effect is good. According to the present invention, the tearable film stability is significantly improved, the excellent protection and repair effect is provided, the compatibility of the components is good, the product stability is high, and the multiple effects of ocular surface cleaning, asthenopia relieving, conjunctival congestion reducing and blue light oxidation damage preventing are provided.

The invention relates to the technical field of lighting equipment, in particular to a negative oxygen ion eye-protection lamp capable of inhibiting myopia and relieving asthenopia, which comprises an eye-protection lamp body, a lamp post and a negative oxygen ion generator, the eye-protection lamp body is used for emitting full-spectrum light; the negative oxygen ion generator is installed at the joint of the eye protection lamp body and the lamp pole, and the concentration of negative oxygen ions generated by the negative oxygen ion generator is 5000-5000 / cm < 3 >. When the eye protection lamp is used, the negative oxygen ion generator is arranged at the joint of the eye protection lamp body and the lamp pole, the negative oxygen ion generator can generate negative oxygen ions with the concentration of 5000-50000 / cm < 3 >, more dopamine is secreted by a living body through the negative oxygen ions, the fundus blood flow density and the fundus retina cell activity are improved, the choroid thickness is increased, and therefore the eye protection effect is improved. Therefore, the visual comfort is improved, and the effects of inhibiting myopia and relieving asthenopia are achieved.

The present disclosure relates to the technical field of biomedicine, and in particular to use of miRNA or modified miRNA in treating fundus oculi diseases. The miRNA or modified miRNA has biological activity, can be absorbed by cells in vitro or retina cells in vivo, and quickly plays a biological role. Through a topical administration mode, the miRNA or the modified miRNA can inhibit pathological neovascularization, promote recovery of a non-perfusion region, reduce expression of retinal inflammatory factors, relieve retinal fibrosis, and promote nerve injury repair. The method has very good application and research values in the field of biomedicine.

The application discloses a multi-waveband LED epitaxial structure and a preparation method thereof, and relates to the technical field of semiconductors. The multi-waveband LED epitaxial structure is characterized in that the multi-quantum well light-emitting layer comprises a first long-wave blue light multi-quantum well light-emitting layer, a second middle-wave blue light multi-quantum well light-emitting layer, a third short-wave blue light multi-quantum well light-emitting layer and a fourth short-wave blue light multi-quantum well light-emitting layer which are stacked in sequence. The LED chip prepared by using the epitaxial structure can emit three different wavebands of long-wave blue light, middle-wave blue light and short-wave blue light. The excitation light source with the three wavebands of blue light can excite a red-green mixed fluorescent powder layer to generate a full-spectrum white light LED light source. Compared with the blue light LED chip with only one waveband, the short-wave blue light with a wavelength of less than 450 nm accounts for a small proportion, the damage to the human eye retina cells is small, and the healthy full-spectrum white light LED light source with a high color rendering index can be realized.

The general inventive concepts contemplate methods and compositions for modifying certain cell lines to facilitate the production of retinal tissue from human induced pluripotent stem cells. Human induced pluripotent stem cells can be cultured to develop into retinal organoids, among other cells types. The retinal organoids play a role in modeling both human retinal development and retinal disease. The methods and compositions discussed herein provide means to measure and monitor human induced pluripotent stem cells during development.

The invention relates to the technical field of lighting equipment, in particular to an eye protection lamp capable of inhibiting myopia and relieving fatigue, which comprises a shell and a negative ion generator, a substrate, a light source module and a light guide plate are sequentially arranged in an inner cavity of the shell from inside to outside, and the light source module is provided with a blue light bead group, a purple light bead group and a dark red light bead group. The wavelength of a light source emitted by the light source module ranges from 385 nm to 780 nm, the wavelength of a light source emitted by the purple light lamp bead set ranges from 385 nm to 420 nm, and the wavelength of a light source emitted by the dark red light lamp bead set ranges from 650 nm to 780 nm. During use, the ultraviolet lamp bead group with the light source wavelength of 385-420 nm and the dark red lamp bead group with the light source wavelength of 650-780 nm are arranged in the light source module and are matched with the negative ion generator for use, so that organisms are promoted to secrete more dopamine, the fundus blood flow density and the fundus retina cell activity are improved, the choroid thickness is increased, and the growth of the ocular axis is inhibited; the vision comfort is improved, myopia is inhibited, the blood oxygen concentration is increased, free radicals in the body are eliminated, and fatigue is relieved.