47 results about "Hypermetropia" patented technology

A method and apparatus are disclosed for controlling optical aberrations to alter relative curvature of field by providing ocular apparatuses, systems and methods comprising a predetermined corrective factor to produce at least one substantially corrective stimulus for repositioning peripheral, off-axis, focal points relative to the central, on-axis or axial focal point while maintaining the positioning of the central, on-axis or axial focal point on the retina. The invention will be used to provide continuous, useful clear visual images while simultaneously retarding or abating the progression of myopia or hypermetropia.

A method and apparatus are disclosed for controlling optical aberrations to alter relative curvature of field by providing ocular apparatuses, systems and methods comprising a predetermined corrective factor to produce at least one substantially corrective stimulus for repositioning peripheral, off-axis, focal points relative to the central, on-axis or axial focal point while maintaining the positioning of the central, on-axis or axial focal point on the retina. The invention will be used to provide continuous, useful clear visual images while simultaneously retarding or abating the progression of myopia or hypermetropia.

A method and apparatus are disclosed for controlling optical aberrations to alter relative curvature of field by providing ocular apparatuses, systems and methods comprising a predetermined corrective factor to produce at least one substantially corrective stimulus for repositioning peripheral, off-axis, focal points relative to the central, on-axis or axial focal point while maintaining the positioning of the central, on-axis or axial focal point on the retina. The invention will be used to provide continuous, useful clear visual images while simultaneously retarding or abating the progression of myopia or hypermetropia.

There are described an excimer laser unit and a method of controlling the unit to perform cornea ablation to reduce presbyopia, wherein the excimer laser unit is controlled to form on the cornea a photoablative pattern inducing a fourth-order ocular aberration, in particular a positive spherical aberration. More specifically, an aberrometric map of the eye is first acquired indicating the visual defects of the eye, which include second-order visual defects such as hypermetropia, astigmatism, and myopia, and higher-order visual defects such as spherical aberration; if the detected spherical aberration is negative, it is reduced by numerically increasing its absolute value to obtain an overcorrect photoablative inducing positive spherical aberration; conversely, if the detected spherical aberration is positive, its sign is changed and its absolute value increased numerically to obtain an overcorrect photoablative pattern inducing positive spherical aberration; and the photoablative pattern so generated is supplied to the excimer laser unit for implementation on the cornea.

The invention relates to a method of preventing the induction of aberrations in laser refractive surgery systems. Standard laser refractive surgery systems successfully correct low-order refractive errors (myopia, hypermetropia and astigmatism), but induce spherical aberration and, by extension, other high-order aberrations, which result in a worsening of vision quality. Said increase in spherical aberration is due to the shape of the cornea, and not inherent in the theoretical ablation profile, and, as a result, the problem is, in principle, common to all laser systems. The invention relates to a systematic method which can be used with any system and ablation profile in order to obtain a profile correction factor. The correction factor, which is specific to each system, can be applied in order to prevent the induction of spherical aberration and, in this way, improve the optical and visual quality of patients following surgery compared to surgery performed with standard systems. Moreover, the inventive method can be used to improve the production of lenses with controlled high-order aberrations using laser systems.

The present invention is directed to compositions and methods for treating presbyopia, mild hyperopia, and irregular astigmatism. The compositions include a cholinergic agent, such as a muscarinic acetylcholine receptor M3 agonist, and an alpha agonist having an imidazoline group or a non-steroidal anti-inflammatory agent (NSAID) having COX-2 selectivity. It has been found that an alpha agonist having an imidazoline group or non-steroidal anti-inflammatory agent (NSAID) having COX-2 selectivity in combination with a cholinergic agent, such as pilocarpine, act synergistically to improve the accommodative and focusing ability of the eye while minimizing the side effects from each compound.

Badal Optometer and rotating cylinders are inserted in the AO-OCT to correct large spectacle aberrations such as myopia, hyperopic and astigmatism for ease of clinical use and reduction. Spherical mirrors in the sets of the telescope are rotated orthogonally to reduce aberrations and beam displacement caused by the scanners. This produces greatly reduced AO registration errors and improved AO performance to enable high order aberration correction in a patient eyes.

There are described an excimer laser unit and a method of controlling the unit to perform cornea ablation to reduce presbyopia, wherein the excimer laser unit is controlled to form on the cornea a photoablative pattern inducing a fourth-order ocular aberration, in particular a positive spherical aberration. More specifically, an aberrometric map of the eye is first acquired indicating the visual defects of the eye, which include second-order visual defects such as hypermetropia, astigmatism, and myopia, and higher-order visual defects such as spherical aberration; if the detected spherical aberration is negative, it is reduced by numerically increasing its absolute value to obtain an overcorrect photoablative inducing positive spherical aberration; conversely, if the detected spherical aberration is positive, its sign is changed and its absolute value increased numerically to obtain an overcorrect photoablative pattern inducing positive spherical aberration; and the photoablative pattern so generated is supplied to the excimer laser unit for implementation on the cornea.

A binocular vision apparatus allows a patient to view objects through the apparatus with polychromatic light and monochromatic aberration correction, such that the chromatic aberration of the eye can be combined with the monochromatic aberration correction, so as to provide a more accurate determination of vision quality. The binocular vision apparatus provides left and right viewing optics that can substantially maintain the line of sight of each eye, such that objects can be viewed in a room with 3D depth perception corresponding to the distance of the object from the patient. As both near and far objects can be viewed with binocular aberration correction, the patient can alternate binocular viewing between near and far vision with chromatic aberration so as to evaluate a proposed treatment such as a presbyopia correction.

The invention relates to a device for preventing from myopia by training special near vision by mydriasis and a using method thereof, which belong to a technic field of a physiatrics used for eyes. The device includes an eyeglass frame, an eyeglass support and a lens, a diopter of the lens Phi=1 / u+A+B-delta phi, wherein a hypometropia degree A is an eye hypermetropia rectification diopter, a mydriasis diopter B has a value between 0.1-3D, delta Phi is a minitrim value and generally is zero, u has a value between 130-1000 mm, the device is provided with a sound, light, electricity, machine controlled or man controlled distance controlling mechanism for the u. The invention is characterised by specially used for myopia prevention training, having a marked effct, rapid curative effect, simple strucure, convenient usage, safety, reliability, having no side effect, being easy to spread, and the method is simple and scientific; being suitable for myopia prevention and rapid treatment of functional myopia for children, especially for students in a long term; being capable of resuming vision of the children to 1.5 in 3 months.

A binocular vision apparatus allows a patient to view objects through the apparatus with polychromatic light and monochromatic aberration correction, such that the chromatic aberration of the eye can be combined with the monochromatic aberration correction, so as to provide a more accurate determination of vision quality. The binocular vision apparatus provides left and right viewing optics that can substantially maintain the line of sight of each eye, such that objects can be viewed in a room with 3D depth perception corresponding to the distance of the object from the patient. As both near and far objects can be viewed with binocular aberration correction, the patient can alternate binocular viewing between near and far vision with chromatic aberration so as to evaluate a proposed treatment such as a presbyopia correction.

An optometric apparatus and an optometric method which perform an accurate eye examination on people who have a wide range of refractive powers with astigmatism, myopia or hyperopia, and which are also applicable especially to those with mixed astigmatism are provided. The apparatus performs a subjective eye examination by prompting a subject to view test symbols displayed on a computer screen by one of the right and left eyes at a time. The system includes astigmatic axis angle determination means which displays test symbols for determining an astigmatic axis angle and then determines the astigmatic axis angle, hyperopia and myopia determination means which displays test symbols for determining hyperopia or myopia in two orthogonal orientations selected based on the determined astigmatic axis angle, and determines hyperopia or myopia at the astigmatic axis angle and at an angle orthogonal thereto, and refractive power determination means which displays test symbols for determining a refractive power in two orthogonal orientations selected based on the determined astigmatic axis angle and determines a refractive power at the astigmatic axis angle and at an angle orthogonal thereto.

The present invention is directed to compositions and methods for treating presbyopia, mild hyperopia, and irregular astigmatism. The compositions include a cholinergic agent, such as a muscarinic acetylcholine receptor M3 agonist, and an alpha agonist having an imidazoline group or a non-steroidal anti-inflammatory agent (NSAID) having COX-2 selectivity. It has been found that an alpha agonist having an imidazoline group or non-steroidal anti-inflammatory agent (NSAID) having COX-2 selectivity in combination with a cholinergic agent, such as pilocarpine, act synergistically to improve the accommodative and focusing ability of the eye while minimizing the side effects from each compound.

Systems, methods and apparatus for performing selective ablation of a corneal surface of an eye to effect a desired corneal shape, particularly for correcting a hyperopic / astigmatic condition by laser sculpting the corneal surface to increase its curvature. In one aspect of the invention, a method includes the steps of directing a laser beam onto a corneal surface of an eye, and changing the corneal surface from an initial curvature having hyperopic and astigmatic optical properties to a subsequent curvature having correctively improved optical properties. Thus, the curvature of the anterior corneal surface is increased to correct hyperopia, while cylindrical volumetric sculpting of the corneal tissue is performed to correct the astigmatism. The hyperopic and astigmatic corrections are preferably performed by establishing an optical correction zone on the anterior corneal surface of the eye, and directing a laser beam through a variable aperture element designed to produce a rectangular ablation (i.e., cylindrical correction) on a portion of the optical correction zone. The laser beam is then displaced by selected amounts across the optical correction zone to produce a series of rectangular ablations on the correction zone that increases the curvature of the corneal surface to correct the hyperopic refractive error.

The invention provides a progressive ophthalmic lens suitable to be worn by a person engaged in a sporting activity. For this purpose the lens has a far vision region which is enlarged, and a peripheral field of vision which is separated and whose mean sphere gradients are gentle. When a progressive lens of this kind is allocated to a wearer, the lens can have an addition value that is approximately equal to a prescribed value, or an addition value that is less than the prescribed value.

Badal Optometer and rotating cylinders are inserted in the AO-OCT to correct large spectacle aberrations such as myopia, hyperopic and astigmatism for ease of clinical use and reduction. Spherical mirrors in the sets of the telescope are rotated orthogonally to reduce aberrations and beam displacement caused by the scanners. This produces greatly reduced AO registration errors and improved AO performance to enable high order aberration correction in a patient eyes.

A method and apparatus are disclosed for controlling optical aberrations to alter modulation transfer functions by providing an ocular system comprising a predetermined corrective factor to produce substantially corrective stimuli for repositioning medium- and high- spatial frequency peaks relative to one another to alter accommodative lag. The invention will be used to provide continuous, useful clear visual images while simultaneously retarding or abating the progression of myopia or hypermetropia.

Corneal implant for introduction into the visual centre (Z) of the cornea of the human eye for the purpose of rectifying impaired vision, in particular presbyopia, or presbyopia in combination with hypermetropia or myopia. To make available a corneal implant which is suitable for use in the visual centre (Z) of the human eye and can be used to correct presbyopia on its own or in combination with hypermetropia or myopia, it is provided that the effective thickness (d) of the corneal implant (2), measured in the direction of the optic axis (5) of the eye, is more than 50[mu]m and the maximum width (b), measured in a plane perpendicular to the direction of thickness, is less than l mm, the corneal implant (2) having no imaging function in relation to the human eye.

A method for treating hyperopia or presbyopia in a patient, the method comprising making a cut deep in the patient's cornea to create a two-dimensional slit adjacent to and generally parallel to an anterior surface of the cornea and injecting a liquid or semi-solid transparent filler material into the deep cut in an amount sufficient to flatten the posterior surface of the cornea to increase the refractive power of the cornea by a predetermined correction of up to about 5 diopters due to the physical flattening of the posterior surface of the cornea, wherein the transparent filler material comprises a refractive index of about 1.3 to about 1.6, and forms a corneal implant with a lenticular shape within the cornea.

The present invention includes an ophthalmic device and system of mounting for correcting hyperopia, myopia and presbyopia. The present invention includes a limbus ring mountable in an encircling relation to a central optic zone of a cornea on a limbus annulus surrounding the cornea. In the limbus ring defines a substantially annular toroid defining a first average diameter that is selectable and has a hydrophilic coating disposed thereon. The inner radius of the limbus ring is selectable such that, upon mounting on the limbus annulus, the limbus ring causes the limbus annulus to contract or expand thereby causing the curvature of the cornea and the eye length to increase or decrease. The mounting system of the present invention is adapted to receive a limbus ring and further adapted to selectively place the limbus ring on a limbus annulus.

The invention relates to an ophthalmic lens for long-sighted and intermediate vision comprising a complex surface provided with an optical centre, a substantially umbilicated meridian line and an average size sphere progression on the top surface equal to or greater than 0.50 diopters. The complex surface is provided in the top part thereof with a long-sighted vision area which is formed by cylinder points equal to or less than 0.25 diopters and covers an angular sector focused on the optical centre and whose angle is equal to 160°. Said complex surface also comprises an average size substantially constant sphere on the meridian line in the long-sighted vision area and a progression length equal to or less than 12 mm. Said progression length is defined as a vertical distance between the optical centre and a median point for which the average sphere if greater than 85% of progression on the average sphere in the optical centre. The inventive lens is suitable for driving and prescribed to persons having additional prescription greater than a power progression, whereby a correction adaptable to the power prescription of a longsighted vision person is provided in the top part of the lens. The lower part of the lens ensures the correction needed for an intermediate vision person.

The invention discloses virtual-reality equipment which comprises a virtual-reality display device, a lens group and a diopter adjuster, wherein the virtual-reality display device is used for displaying a display source signal by virtue of connection with video equipment; the lens group is a combination of at least two lenses; the diopter adjuster is used for regulating the distance between the lenses in the lens group, so as to ensure that the diopter of the lens group is continuously adjustable in a preset range. By virtue of the virtual-reality equipment provided by the invention, a user can adjust the distance between the lenses of the equipment, so that formed images are positioned within the normal vision range of the user, the problem that inconvenience in use is caused since a crowd suffering from myopia or hypermetropia must wear glasses while using traditional VR equipment or lenses with fixed diopter are additionally arranged on the equipment is avoided, the user requirements of most people are met, and furthermore, the use comfort level of the user is improved.

The invention relates to a medicament, the active principle of which is a leucine and, for example, a N-ACETYL-DL-LEUCINE. It can be applied to the prevention and / or treatment of eye diseases or disorders and especially of hereditary dystrophies of the retina, glaucomatous neuropathy, glaucoma, macular degeneration, myopia, presbyopia, hypermetropia, astigmatism, all the ophtalmologic diseases or disorders inducing a decrease of visual function and / or age-related physiological vision decline.

Problem To provide a lens for eyesight correction glasses that allows the user to see a nearby viewing object in a naked eye state. Means for Resolution An upper portion A of a lens to be mounted on glasses that is made an eyesight correction portion for far-viewing and its lower portion B that is made a portion for near-viewing that has no eyesight correction ability or has small eyesight correction ability are integrated with each other. The eyesight correction portion for far-viewing corrects farsightedness, nearsightedness, astigmatism, etc. The lower portion having no eyesight correction ability includes no correction diopter and provides the same effect as viewing with the naked eye. The reason why this portion is used to perform small eyesight correction is to minimize an undue load on the ciliary muscles in view of the facts that the effectuation of "adjustment" that is a function of stressing the ciliary muscles to increase the thickness of the crystalline lenses to thereby increase the refractive power varies from one person to another and that there are persons with astigmatism. It is preferable that the correction ability be as small as 0.00-1.00 diopter. In particular, the lens for eyesight correction glasses contributes to acceleration of natural recovery of infants from temporary nearsightedness.

The invention relates to an ophthalmic lens for long-sighted and intermediate vision comprising a complex surface provided with an optical centre, a substantially umbilicated meridian line and an average size sphere progression on the top surface equal to or greater than 0.50 diopters. The complex surface is provided in the top part thereof with a long-sighted vision area which is formed by cylinder points equal to or less than 0.25 diopters and covers an angular sector focused on the optical centre and whose angle is equal to 160°. Said complex surface also comprises an average size substantially constant sphere on the meridian line in the long-sighted vision area and a progression length equal to or less than 12 mm. Said progression length is defined as a vertical distance between the optical centre and a median point for which the average sphere if greater than 85% of progression on the average sphere in the optical centre. The inventive lens is suitable for driving and prescribed to persons having additional prescription greater than a power progression, whereby a correction adaptable to the power prescription of a longsighted vision person is provided in the top part of the lens. The lower part of the lens ensures the correction needed for an intermediate vision person.

The present disclosure is directed to lenses, devices, methods and / or systems for addressing refractive error. Certain embodiments are directed to changing or controlling the wavefront of the light entering a human eye. The lenses, devices, methods and / or systems can be used for correcting, addressing, mitigating or treating refractive errors and provide excellent vision at distances encompassing far to near without significant ghosting. The refractive error may for example arise from myopia, hyperopia, or presbyopia with or without astigmatism. Certain disclosed embodiments of lenses, devices and / or methods include embodiments that address foveal and / or peripheral vision. Exemplary of lenses in the fields of certain embodiments include contact lenses, corneal onlays, corneal inlays, and lenses for intraocular devices both anterior and posterior chamber, accommodating intraocular lenses, electro-active spectacle lenses and / or refractive surgery.

The compound preparation for treating eye diseases is prepared with zinc sulfate, nicotinic acid, vitamins and other ingredients and through mixing, grinding and capsulizing. The compound preparation has obvious and stable curative effect owing to its functions of promoting nerve cell regeneration, strengthening regulation of No. 3 nerve and raising eyesight.