Abstract: An ophthalmic lens system for reducing the risk of progression of a myopic eye by selectively maintaining, inducing or creating asymmetry of the peripheral retinal profile for the eye. A method for reducing the risk of progression of myopia comprising determining the magnitude of asymmetry of the on-axis/off-axis refractive error profile or eye length profile of the eye and providing an ophthalmic lens system that corrects for and provides acceptable on-axis vision and simultaneously controls the position of the off-axis refractive error profile or eye length profile such that resultant profile of the eye is asymmetric.

Abstract: A visual stimulus for a set of contrast cards is provided which comprises a hollow outer circle, opposing and identical first and second arc segment within the outer circle which are symmetrical about the vertical diameter of the outer circle, a first filled-in circle and a second filled-in circle being identical in diameter to the first filled-in circle, each residing on opposite ends of the horizontal diameter of the outer circle and each being equidistant from the center of the outer circle, a filled-in center element having a rotational center on the center of the outer circle, the center element being symmetrical about both the horizontal and vertical diameter of the outer circle.

Abstract: An imaging lens includes a first lens; a second lens having positive refractive power; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side with spaces in between each of the lenses. The second lens is formed in a shape of a meniscus lens near an optical axis thereof. The third lens has at least one aspheric surface. The fourth lens has at least one aspheric surface. The fifth lens is formed in a shape so that a surface thereof on the object side is convex toward the object side near an optical axis thereof. The sixth lens has two aspheric surfaces and the surface on the image plane side is convex toward the image plane side near an optical axis thereof. The second lens has a specific Abbe's number.

Abstract: A method, a device, and a corresponding computer program product for calculating (optimizing) and producing a spectacle lens with the aid of a semi-personalized eye model. In one approach, the method includes providing personalized refraction data of at least one eye of the spectacles wearer; establishing a personalized eye model in which at least the parameters: shape of an anterior corneal surface of a model eye; a cornea-lens distance; parameters of the lens of the model eye; and lens-retina distance are established using personalized measured values for the eye of the spectacles wearer, and/or using standard values, and/or using the provided personalized refraction data, such that the model eye has the provided personalized refraction data, wherein at least the establishment of the lens-retina distance takes place via calculation.

Abstract: Eyeglasses are disclosed that include eyeglass frames and a pair of ophthalmic lenses mounted in the frames. The lenses include a dot pattern distributed across each lens, the dot pattern including an array of dots spaced apart by a distance of 1 mm or less, each dot having a maximum dimension of 0.3 mm or less, the dot pattern including a clear aperture free of dots having a maximum dimension of more than 1 mm, the clear aperture being aligned with a viewing axis of a wearer of the pair of eyeglasses.

Abstract: A method for evaluating an ophthalmic lens for a given wearer according to a visual performance parameter includes providing wearer's data for the given wearer. The method further includes providing a visual performance parameter tolerance range for the wearer. The method further includes providing an ophthalmic lens to be evaluated, the ophthalmic lens being characterized by opto-geometrical features. The method further includes computing a value of the visual performance parameter for the lens to be evaluated on the basis of a model. The method further includes evaluating the ophthalmic lens by comparing the computed value of the visual performance parameter with the visual performance parameter tolerance range.

Abstract: A modular, headset for performing ophthalmic tests on a patient comprises a removable optical module that can be replaced based on ophthalmic testing need. A miniaturized fundus camera is provided and can be movably mounted within the headset, including to the optical module. The fundus camera position can be automatically adjusted to align the camera with a headset wearer's eye. Software controls image capture and captured images are combined assembled and combined to provide a wide field retinal image. The optical module can have replaceable sub-components allowing configuration for different ophthalmic tests, such as visual field testing and optical coherence tomography.

Abstract: Provided is a camera optical lens including, sequentially from an object side to an image side, first to fifth lenses. The camera optical lens satisfies: ?8.00?(f1+f3+f5)/f??6.00; 1.00?(R7+R8)/(R7?R8)?3.00; R5/d5??15.00; 10.00?d7/d8?13.02; and 0.80?f4/f?1.50, where f denotes a focal length of the camera optical lens; f1, f3, f4 and f5 denote focal lengths of the first, third, fourth and fifth lenses, respectively; R5 denotes a curvature radius of an object side surface of the third lens; R7 and R8 denote curvature radiuses of object side and image side surfaces of the fourth lens, respectively; d5 and d7 denote on-axis thicknesses of the third and fourth lenses, respectively; and d8 denotes an on-axis distance from the image side surface of the fourth lens to an object side surface of the fifth lens. The camera optical lens can achieve high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.

Abstract: Methods, apparatus, and systems for performing an ophthalmic diagnostic test are disclosed. In one aspect, a head-wearable device for administering an ophthalmic test to a subject can comprise a head-wearable frame for mounting the device onto the subject's head, and a light seal configured for coupling to the frame so as to isolate at least one eye of the subject from ambient light when the device is worn by the subject.

Abstract: Methods, apparatus, and systems for performing an ophthalmic diagnostic test are disclosed. In one aspect, a head-wearable device for administering an ophthalmic test to a subject can comprise a head-wearable frame for mounting the device onto the subject's head, and a light seal configured for coupling to the frame so as to isolate at least one eye of the subject from ambient light when the device is worn by the subject.

Abstract: An apparatus to treat refractive error of the eye comprises one or more optics configured to project stimuli comprising out of focus images onto the peripheral retina outside the macula. While the stimuli can be configured in many ways, in some embodiments the stimuli are arranged to decrease interference with central vison such as macular vision. The stimuli can be out of focus images may comprise an amount of defocus within a range from about 3 Diopters (“D”) to about 6 D. In some embodiments, the brightness of the stimuli is greater than a brightness of background illumination by an appropriate amount such as at least 3 times the background brightness. In some embodiments, each of a plurality of stimuli comprises a spatial frequency distribution with an amplitude profile having spatial frequencies within a range from about range of 1×10?1 to 2.5×101 cycles per degree.

Abstract: A lens blocker includes a drive cam having a blocker arm guide groove; a blocker arm coupled to the drive cam to be movable up and down along the drive cam or to be rotatable about the drive cam, and having a blocker arm guide formed at one end thereof, wherein the blocker arm guide is inserted into the blocker arm guide groove of the drive cam and moves along the blocker arm guide groove; a leap block mount (50), to which a leap block to be attached to a blank lens is mounted and which is coupled to the blocker arm; a blocker arm base moving the blocker arm up and down along the drive cam; and a lens mount onto which the blank lens, is mounted.

Abstract: Methods, apparatus, and systems for performing an ophthalmic diagnostic test are disclosed. In one aspect, a head-wearable device for administering an ophthalmic test to a subject can comprise a head-wearable frame for mounting the device onto the subject's head, and a light seal configured for coupling to the frame so as to isolate at least one eye of the subject from ambient light when the device is worn by the subject.

Abstract: Provided is a test method performed using a lens which comes into contact with a human body during use, the test method including the steps of: providing a membrane member including a membrane swellable upon absorbing water and a supporting base having an annular shape to support an outer periphery of the membrane; allowing cells to adhere on the membrane of the membrane member; and bringing the membrane to which the cells are adhered into close contact with the surface of the lens, by immersing the membrane member and the lens into a liquid and deforming the membrane in a swollen state along the surface of the lens.

Abstract: A method and apparatus for a diagnostic lens to determine decentration from the optical axis or pupil center in the manufacture of a prescription ophthalmic lens.

Abstract: A method for producing a spectacle lens 2 including a base portion 2 that is made of a resin material and includes a convex object-side face and a concave eyeball-side face, and an optical element 12 that is made of a material different from the material for forming the base portion and is embedded in the base portion, is described. The method includes: arranging an optical element in a cavity 28 of a mold including a first mold part 20 and a second mold part 24 that can be opened and closed; introducing a resin material for forming a base portion of the spectacle lens into the cavity of the mold; obtaining the spectacle lens by curing the resin material that is a resin for forming the base portion; disassembling the mold; and detaching the spectacle lens from the mold.

Abstract: A set of ophthalmic lenses is described where each ophthalmic lens has at a point of optical reference a maximum power and meets an optical performance criterion in standard wearing conditions, wherein the range of maximum powers of the set of ophthalmic lenses is greater than or equal to 10 D, and all the ophthalmic lenses of the set of ophthalmic lenses have been manufactured from a set of semi-finished lens blank, each semi-finished lens blank having the same base curve.

Abstract: Methods, apparatus, and systems for performing an ophthalmic diagnostic test are disclosed. In one aspect, a head-wearable device for administering an ophthalmic test to a subject can comprise a head-wearable frame for mounting the device onto the subject's head, and a light seal configured for coupling to the frame so as to isolate at least one eye of the subject from ambient light when the device is worn by the subject.

Abstract: The invention generally relates to optical filters that provide regulation and/or enhancement of chromatic and luminous aspects of the color appearance of light to human vision, generally to applications of such optical filters, to therapeutic applications of such optical filters, to industrial and safety applications of such optical filters when incorporated, for example, in radiation-protective eyewear, to methods of designing such optical filters, to methods of manufacturing such optical filters, and to designs and methods of incorporating such optical filters into apparatus including, for example, eyewear and illuminants.

Abstract: A selection aid for selecting lenses for spectacles on the basis of a plurality of customer-specific criteria contains a first disc and a second disc. The first disc has a selection area with criteria to be selected and selection recommendations and is divided into selection regions of equal size. The second disc is rotatably connected to the first disc about an axis of rotation. The second disc partly conceals the selection area and visually frees an area region of the selection area that corresponds to one of the selection regions in terms of size and shape.