263 results about "Eye structure" patented technology

In one aspect, the invention features a method and device for measuring blood concentration of a substance such as glucose in the aqueous humor by illuminating the aqueous humor with a light source at a frequency that is absorbed by the substance to the measured, and then sensing photoacoustically generated sound waves originated within the aqueous humor as a consequence of illumination by the light source. The blood concentration can be estimated from the amplitude of the sound waves received. The method may be combined with other optical techniques for glucose measurement and / or with optical or ultrasonic techniques for topographic mapping of eye structures.

To protect tissue in the treatment of an eye (3) with a focused pulsed laser beam (21) generated by a laser system (2), e.g. a femtolaser system, operating data which define an operating area operated on by the focus (F) of the laser beam (21) during the treatment are acquired in a device (1). The device (1) comprises a processing module (14) for providing control data for the laser system (2) on the basis of the operating data and taking into consideration the light propagation in the eye. The control data limit the time of the treatment by the focus (F) at positions within the operating area in each case in such a manner that tissue damage resulting from the treatment by the laser beam (21) is essentially prevented in eye structures located outside the operating area. In particular, the control data determine movements of the focus (F) within the operating area and / or the activity of the laser beam (21) in such a manner that the mean irradiation intensity is reduced and the maximum temperatures in the tissue of eye structures located outside the operating area, particularly in the iris and the retina, are reduced.

An integral laser imaging and treatment apparatus, and associated systems and methods that allow a physician (e.g., a surgeon) to perform laser surgical procedures on an eye structure or a body surface with an integral laser imaging and treatment apparatus disposed at a first (i.e. local) location from a control system disposed at a second (i.e. remote) location, e.g., a physician's office. In some embodiments, communication between the integral laser imaging and treatment apparatus and control system is achieved via the Internet®. Also, in some embodiments, the laser imaging and treatment apparatus includes a dynamic imaging system that verifies the identity of a patient, and is capable of being used for other important applications, such as tracking and analyzing trends in a disease process. Further, in some embodiments, the laser imaging and treatment apparatus determines the geographical location of the local laser generation unit of the system using GPS.

The invention discloses a method for positioning an iris and a pupil based on eye structure classification. By the method, a face is detected in an image acquired by a system, and an eye image is extracted. Under a remote non-intrusive condition, the acquired eye image can be changed within an extremely large range, for example, the radius of the iris can be changed within dozens to hundreds of pixels. According to the method, before an iris boundary and a pupil boundary are precisely positioned, the eye image is automatically subjected to structural classification by an unsupervised learning technology; due to the classification, the iris and the pupil can be roughly positioned; the size of an iris region can be effectively estimated; stray data of a non iris boundary and a non pupil boundary are greatly eliminated; and a search space aiming at positions and sizes of the iris and the pupil is reduced. In the reduced search space, constrained optimization is performed according to fixed features of the iris and the pupil; and the optimal iris boundary and the optimal pupil boundary are searched. By the method, the stability and the precision of positioning of the iris and the pupil can be greatly improved; and the method is particularly suitable for a remote non-intrusive iris obtaining system.

A full-eye optical coherence tomography imager comprises a frequency sweeping light source, an optical fiber polarizer, a first optical circulator, a second optical circulator, a first broadband polarization splitting prism, a second broadband polarization splitting prism, an ocular anterior segment scanning imaging light path, an eye ground scanning imaging light path, a third broadband polarization splitting prism, two reference mirrors, a fourth broadband polarization splitting prism, a fifth broadband polarization splitting prism, a second polarized light protecting coupler, a third polarized light protecting coupler, a first balance detector, a second balance detector, a function generation card, a data acquisition card, a computer and the like, wherein the first broadband polarization splitting prism, the second broadband polarization splitting prism, the ocular anterior segment scanning imaging light path and the eye ground scanning imaging light path are arranged in a sample arm; the third broadband polarization splitting prism and the two reference mirrors are arranged in a reference arm; the fourth broadband polarization splitting prism, the fifth broadband polarization splitting prism, the second polarized light protecting coupler, the third polarized light protecting coupler, the first balance detector and the second balance detector are arranged at a detecting end. The imager is based on a frequency sweeping optical coherence tomography technology, a component p and a component s of a polarized beam are used for conducting imaging on an eye ground and an ocular anterior segment respectively, and thus three-dimensional high resolution real-time imaging can be conducted on an full eye structure at the same time on the same system without any device for conversion. By means of the full-eye optical coherence tomography imager, optical path length and dispersion matching and scan setting can respectively be carried out on ocular anterior segment imaging and eye ground imaging, and thus the optimal imaging quality and the view field size of ocular anterior segment imaging and eye ground imaging can be obtained at the same time.

The invention is a retinal prosthesis with an improved configuration mounting necessary components within and surrounding the eye. The present invention better allows for the implantation of electronics within the delicate eye structure. The invention further limits the necessary width of a thin film conductor passing through the sclera by use of a multiplexer external to the sclera and a demultiplexer internal to the sclera.

An integral laser imaging and treatment apparatus, and associated systems and methods that allow a physician (e.g., a surgeon) to perform laser surgical procedures on an eye structure or a body surface with an integral laser imaging and treatment apparatus disposed at a first (i.e. local) location from a control system disposed at a second (i.e. remote) location, e.g., a physician's office. In some embodiments, communication between the integral laser imaging and treatment apparatus and control system is achieved via the Internet®. Also, in some embodiments, the laser imaging and treatment apparatus is further configured to provide photodynamic therapy to a patient.

Provided are an antireflection optical assembly and a manufacturing method thereof. The antireflection optical assembly comprises a substrate, an antireflection layer located on the surface of the substrate and a covering layer located on the surface of the antireflection layer, wherein the antireflection layer comprises a zinc oxide nanorod array composed of a plurality of zinc oxide nanorods, and the covering layer is made of one or more of silicon oxide, titanium oxide, aluminum oxide and zirconium oxide. The manufacturing method comprises providing the substrate, enabling the antireflection layer with a moth eye structure to be formed on the surface of the substrate, and enabling the covering layer to be formed on the surface of the antireflection layer, wherein the antireflection layer comprises a protrusion array composed of a plurality of protrusions, and the covering layer is made of one or more of silicon oxide, titanium oxide, aluminum oxide and zirconium oxide.

Simulated eye structure for plush toys, dolls, mannequins or other simulated or fanciful inanimate articles, sculptures, figurines and the like including at least one receptacle housing for a light source such as a light emitting diode. The receptacle housing has an external surface constructed as a substantially translucent cover having generally opaque regions representing iris / pupil and / or eyelid areas. The receptacle housing is provided with circuitry including a switch which may be a pressure activated type providing power to the light source. A timing circuit may be reset for circuitry activation cycles. The fabrication of the simulated eye structures with covered housings results in an inanimate article with softly illuminated eyes with uses ranging from retail advertising displays to interactive nightlights safely enjoyed by children as nighttime companions.

Phakic refractive lens (PRL) for correcting myopia or hyperopia are disclosed. The lens is implanted in the posterior chamber of the eye, with no permanent point of fixation, such that it floats between the patient's iris and natural lens. The lens corrects refractive errors in the eye, while maintaining the fluid dynamics of the eye and not causing stress or damage to eye structures. The lenses are made from a flexible material (such as those having a hardness of from about 20 to about 50 Shore A), having a specific gravity of from about 0.9 to about 1.2 g / cm<3>, and have a mass per unit area of from about 0.03 to about 0.30 mg / mm<2>. The method for using those lenses and surgical kits including those lenses are also disclosed.

The present invention provides a reflective film with a moth eye structure and a preparation technology thereof. The reflective film provided by the invention comprises a PET layer, a reflective structure layer and a moth eye anti-reflection structure layer. Through the geometric optics principle, the reflective structure layer is configured to take a pyramid structure with three vertical surfaces as a reflective structure. Through the bionics principle, the moth eye anti-reflection structure layer is configured to take a moth eye micro-nano structure as an anti-reflection layer. Compared with the traditional reflective film, the reflective film provided by the invention has a better reflective effect. Through adoption of reel-to-reel UV two-sided rolling technology (R2R UV-NIL), the preparation technology provided by the invention comprises adhesive dripping, filling, UV illumination and demolding. According to the invention, different structure layers may be printed on the surfaces at two sides of the PET layer; and moreover, the preparation technology is simple, and the fast and large-area commercialization requirement with high resolution and high throughput may be satisfied.

In one aspect, the invention features a method and device for measuring blood concentration of a substance such as glucose in the aqueous humor by illuminating the aqueous humor with a light source at a frequency that is absorbed by the substance to the measured, and then sensing photoacoustically generated sound waves originated within the aqueous humor as a consequence of illumination by the light source. The blood concentration can be estimated from the amplitude of the sound waves received. The method may be combined with other optical techniques for glucose measurement and / or with optical or ultrasonic techniques for topographic mapping of eye structures.

A telemedicine system with dynamic imaging is disclosed herein. In some embodiments, the telemedicine system comprises a laser imaging and treatment apparatus, and associated systems and methods that allow a physician (e.g., a surgeon) to perform laser surgical procedures on an eye structure or a body surface with a laser imaging and treatment apparatus disposed at a first (i.e. local) location from a control system disposed at a second (i.e. remote) location, e.g., a physician's office. Also, in some embodiments, communication between the laser imaging and treatment apparatus and control system is achieved via the Internet®. Further, in some embodiments, the telemedicine system includes a dynamic imaging system and / or a facial recognition system that verifies the identity of a patient, and is capable of being used for other important applications, such as tracking and analyzing trends in a disease process.

The present invention provides: an antireflection structure capable of partially mixing areas having different reflective properties so as to make same suitably visible, in a film having a moth-eye structure, capable of sufficiently reducing reflection as a result of the moth-eye structure, and capable of providing sufficiently excellent transmittance; a transfer mold; production methods therefor; and a display device. This antireflection structure has a width between adjacent peaks that is no more than the wavelength of visible light and has an uneven structure comprising a transparent body, on the surface thereof. The antireflection structure has: a first area having the uneven structure on the surface thereof; and a second area having a structure, on the surface thereof, comprising a transparent body and differing from the uneven structure in the first area. The planar shape of the second area constitutes at least one selected from a group comprising characters, codes, and graphics.

An integral laser imaging and treatment apparatus, and associated systems and methods that allow a physician (e.g., a surgeon) to perform laser surgical procedures on an eye structure or a body surface with an integral laser imaging and treatment apparatus disposed at a first (i.e. local) location from a control system disposed at a second (i.e. remote) location, e.g., a physician's office. In some embodiments, communication between the integral laser imaging and treatment apparatus and control system is achieved via the Internet®. Also, in some embodiments, the laser imaging and treatment apparatus includes a dynamic imaging system that verifies the identity of a patient, and is capable of being used for other important applications, such as tracking and analyzing trends in a disease process. Further, in some embodiments, the laser imaging and treatment apparatus determines the geographical location of the local laser generation unit of the system using GPS.