77results about How to "Corrected vision" patented technology

Contact lenses incorporating asymmetric radial power profiles that increase the radial dioptric power from the center to the margin of the optical zone of the lenses may be utilized to prevent and/or slow myopia progression. The power profiles vary along different meridians.

A method for correcting vision of an eye, including the steps of separating a portion of the cornea to form first and second internal surfaces in the cornea, and then placing at least one microscopic lens in between the first and second internal surfaces in the cornea, so that the external surface of the cornea is not substantially displaced. In a preferred embodiment, the microscopic lenses can be placed in concentric circles around the main optical axis so that the lenses form multifocal or bifocal vision.

An eye covering such as a contact lens may comprise one or more structures to pump tear liquid under the covering such that the covering can remain in the eye and correct vision for an extended amount of time. In many embodiments, the covering comprises a material having fenestrations to draw tear liquid under the covering and an outer portion shaped to contact the conjunctiva over the sclera, such that when the eye closes pressure of one or more eyelids urges tear liquid through one or more fenestrations and under the outer portion shaped to contact the conjunctiva. When the eye blinks, the pressure of the one or more eyelids can urge the covering toward the cornea such that tear liquid can pass through the fenestrations.

A contact lens having a cover layer of polyvinyl alcohol and an opaque simulated iris pattern and an associated method of manufacture. The opaque simulated iris pattern obscures the underlying natural iris for superior color transformation, and provides enhanced cosmetic effect.

The invention is applicable in the field of vision correction, and provides a device and a method for vision correction. The device comprises an image display mode set unit, a storage unit, an image display control unit, an image output unit and a three-dimensional display, wherein the image display mode set unit presets a plurality of image display modes for guiding an eye vision system of users to perform the movement in multiple directions and at far and near distances; the storage unit is used for storing the image display modes; when receiving image display instructions, the image display control unit acquires the image display modes corresponding to the image display instructions from the storage unit; the image output unit outputs images according to the image display modes acquired by the image display control unit under the control of the image display control unit; and the three-dimensional display displays the images outputted by the image output unit virtually under the control of the image display control unit. The device provided by the embodiment of the invention guides the eye vision system of the users to perform multi-direction, far and near alternating and centralized movement through the images displayed by the three-dimensional display, so that the vision of the users is corrected. The device has the advantages of convenient carrying, low cost and wide application range.

A contact lens formed from a transparent material having front and rear surfaces, wherein the rear surface has a base curve which is adapted to fit an eye of a wearer of the lens. The front surface has a central zone which has two different cylindrical curvatures which generate first and second central-zone refractive powers differing by an astigmatic factor. The front surface also has an outer zone with two different cylindrical curvatures which generate third and fourth central-zone refractive powers differing by the astigmatic factor, and an intermediary region, intermediate the central zone and the outer zone, having one or more contiguous intermediate zones, each intermediate zone having cylindrical curvatures differing by the astigmatic factor. The refractive powers from the central zone to the outer zone form monotonic progressions of decreasing values.

In a drive control system, a front image taken by a camera is processed by an image processor, and an electronic control unit generates control target values according to outputs from the image processor. Actuators control a driving speed and/or a lateral position of an own vehicle in a driving lane, based on the control target values. Front obstacles, such as a preceding vehicle, a blind curve and an uphill road, are included in a front image, and a ratio of the front obstacle occupying a front vision field is calculated. The vehicle is controlled based on information including various obstacles located in front of the vehicle to thereby give an improved security to a driver.

The invention relates to a method of manufacturing a vision correction lens that has a front face and a rear face, and into which light beams emitted by an optical element of a light beam generator system are introduced via an entry surface and directed towards the eye of the wearer to enable information content to be viewed, said light beams being reflected a plurality of times between two “reflection” faces between being introduced into the lens and exiting therefrom, said two reflection faces being faces of a transparent optical insert constituted by a light guide. According to the invention, said insert is completely contained within the lens.

An assistive device for aiding vision correction and rehabilitation is disclosed, which comprises a body, and a vision accommodation aiding element formed with the body. The assistive device is formed as a biofeedback corrective contact lens that can modify the curvature of the cornea to aid correcting vision accommodation. The assistive device can be used in combination eye blinking effects to modify the length of the eye axis. Vision correction and biofeedback accommodation can be therefore achieved.

The invention discloses a holographic three-dimensional display mobile terminal and a method used for vision correction. The mobile terminal comprises a human eye tracking module used to acquire positions of user eyes, a holographic conversion module used to convert a virtual three-dimensional scene to a holographic three-dimensional scene according to the positions of the user eyes, a scene adjusting module used to monitor or receive depth of field of the holographic three-dimensional scene, and sending a field depth adjusting command to the holographic conversion module, and a display module used to display the holographic three-dimensional scenes, so a user can see far or close variation of object distance in the scene. The holographic conversion module is also used to receive the field depth adjusting command, and adjusts the depth of field of the holographic three-dimensional scene, so that object distance in the scene changes to be far or close. Compared with the prior art, the mobile terminal and the method make users rapidly and conveniently see holographic three-dimensional scenes with object distance changing to be far or close on the mobile terminal, realizing a vision correction function. The virtual three-dimensional scenes are converted to the holographic three-dimensional scenes, thereby increasing enthusiasm and entertainment of correcting vision, and improving user experience.

A method for correcting myopia, hyperopia, astigmatism, and multi-focal vision problems is accomplished without the use of a microkeratome or an Excimer laser by using a photodisruption laser such as a femtosecond (“FS”) laser to form a flap of varying thicknesses and radii of curvature. This procedure enables a refractive surgeon to reshape the cornea by controlling the shrinkage of the cornea's collagen fibers.

A technique of refractive eye correction employs multiple steps to correct refractive errors in the eye. In the first step, gross decentrations of the refractive error are corrected, allowing the subsequent steps to be relatively symmetric in their treatment profile. Then, the eye's refractive error is again measured, and a subsequent treatment is applied for the remaining error. The overall treatment is thus completed in two or more steps.

Contact lenses may be designed with locally thinned regions to increase oxygen transmissibility to the eye. The locally thinned regions are preferably positioned outside of the optic zone and in the thicker peripheral zone. For a contact lens formed from a specific material, creating local thinner regions, for example, dimples in the back curve surface of the lens, provides an effective and efficient means for increasing oxygen diffusion.

The invention provides a multifunctional contact lens resistant to ultraviolet ray, diffraction ray and blue ray. The contact lens comprises a lens body, wherein the lens body comprises a lens basic layer which adopts a transparent cambered surface structure matched with the ocular cornea; a circular coloring part with a diameter of 6.3-8.0 mm used for neutralizing blue ray color is arranged at the lens basic layer; or the multifunctional contact lens further comprises an optical film which is attached to the surface, far away from the ocular cornea, of the lens basic layer; the optical film is used for reflecting or neutralizing the blue ray. The multifunctional contact lens resistant to ultraviolet ray, diffraction ray and blue ray, provided by the invention has the function of resisting blue ray, is capable of ensuring relatively high light transmittance on the basis of avoiding the injuries on the eye due to the unnecessary strong rays and diffraction rays, and is suitable for wearing under the environments with strong sunshine, computers, televisions, mobile phones or workshops.