35 results about "Accommodative amplitude" patented technology

A method for adjusting the refractive power of a fluid-filled intraocular lens implanted into a patient's eye. The method comprises ablating a portion of the intraocular lens to alter either one or both of a refractive power and an amplitude of accommodation of the intraocular lens. The ablating is performed while the intraocular lens remains implanted in the patient's eye.

The present invention relates generally to a device and method for the treatment of retinal detachment, ocular hypertension and glaucoma, and increasing the amplitude of accommodation. In an illustrative embodiment, the device includes a tapered, mesh tube. Once the device is within the sclera, the mesh expands to deform the sclera. When the device is placed within the posterior sclera for the treatment of a retinal tear, the device expands deforming the sclera so that the retinal pigment epithelium comes in contact with the retinal tear to seal the tear. For the treatment of ocular hypertension, glaucoma and to increase the amplitude of accommodation, the device is placed within the anterior sclera over the posterior plicata of the ciliary body, which upon expansion causes the underlying ciliary body to deform, resulting in traction on the trabecular meshwork and deformation of the ciliary body, which causes lowering of intraocular pressure, and increases the amplitude of accommodation in patients with ocular hypertension or decreased accommodation.

The embodiment of the invention discloses a wavefront sensing method, device, device and system for a large-view-field active optical telescope and a computer readable storage medium. The method comprises the following steps: calculating low-order wavefront information of each star point in a focal plane out-of-focus image of a telescope by utilizing a DOUNT rapid algorithm, wherein the out-of-focus image of the focal plane is acquired by an image sensor in a long exposure and initial out-of-focus amount state in the moving process of the edge of the field of view of the telescope; if the low-order wavefront aberration of each star point is discontinuous, generating a defocusing amount adjustment instruction according to a preset adjustment amplitude; when the detection telescope automatically increases the defocusing amount on the basis of the initial defocusing amount according to the adjustment amplitude, sending an instruction of re-collecting the out-of-focus image of the focal plane; and finally, obtaining wavefront information of the telescope according to the continuous focal plane out-of-focus image of the low-order wavefront aberration of each star point. According to the invention, the detection precision of telescope wavefront sensing can be effectively improved.

The invention relates to an automatic exposure method and device. The method comprises the steps of: acquiring an average brightness value of a target image; acquiring a preset target brightness value, and according to the average brightness value and the target brightness value, determining a target exposure amplitude; and according to a preset regulation amplitude, sequentially regulating exposure amplitudes until the sum of the regulated exposure amplitudes is matched with the target exposure amplitude. A weight of each pixel point of the target image is determined on the basis of a columnweight parameter and a line weight parameter, the exposure amplitude is determined by the target brightness value and the average brightness value, and a real-time processing speed of image automaticexposure can be effectively improved, so that real-time recording and video monitoring are implemented.

The present invention relates generally to a device and method for the treatment of, ocular hypertension, glaucoma, and increasing the amplitude of accommodation. In an illustrative embodiment, the device includes a self-expanding wire. Once the device is within the posterior chamber between the iris and anterior lens capsule, the wire expands to compress the ciliary muscle. When the device is in place the scleral spur is moved posteriorly resulting in traction on the trabecular meshwork, which causes a reduction in intraocular pressure for the treatment of patients with ocular hypertension and glaucoma. In addition, the compression of the ciliary muscle increases the force of contraction of the ciliary muscle, which increases the amplitude of accommodation in patients with deficient accommodative amplitude and presbyopia.

Methods and apparatus treat the lens capsule so as to increase accommodation of the eye. The treatment of the lens capsule may comprise treating a portion of the lens capsule so as to stiffen the treated portion and improve accommodation of the eye. The intermediate portion of the lens capsule may located between an optically used central portion of the lens capsule and a peripheral portion of the lens capsule connected to zonules of the eye. The stiffened intermediate portion of the lens capsule can improve coupling of the peripheral portion of the lens capsule to the central portion of the lens capsule, such that an amount of accommodation of the optically used central portion of the lens is increased. As the force of the lens capsule to a lens disposed within the lens capsule is increased, the lens may comprise the natural lens of the eye or an artificial lens such as an accommodative IOL. The treatment of the eye to stiffen the intermediate portion may comprise application of one or more of an energy or a substance to the intermediate portion.

The invention provides methods for designing contact lenses that takes into account pupil size and vergence. The lenses of the invention augment the eye's accommodative gain and take advantage of the eye's residual accommodation amplitude.

A lens structure and a manufacturing method thereof, a camera comprising the lens structure, the lens structure comprising: a lens barrel (10); a first lens (30) positioned at the first end surface of the lens barrel (10), the first lens (30) comprising a focusing A light area and an edge area located at the periphery of the light-gathering area; a light-shielding structure (40) covering the edge area of ​​the first lens (30); and at least one second lens (20) located inside the lens barrel (10). In this lens structure, the first lens (30) is arranged on the outside of the lens barrel (10) shell, and the adjustment range is large, the convenience is strong, and the flexibility is high. Moreover, the optical axis of the first lens (30) is at least The alignment degree between the optical axes of a second lens (20) is relatively high, which improves the quality of the lens structure and the yield rate of the lens structure. In addition, with this lens structure, it is also possible to distinguish whether the cause of the quality problem of the lens structure is an assembly problem of at least one second lens (20) or a position setting problem of the first lens (30).