摘要:
Multifocal contact lenses and methods and uses are described. The multifocal contact lenses include an optic zone. The optic zone has an aspheric power profile that provides a near vision refractive power and a distance vision refractive power, and provides an Add power that corresponds to the difference between the near vision refractive power and the distance vision refractive power. The multifocal contact lenses can improve binocular vision of presbyopic subjects by being prescribed such that the non-dominant eye contact lens is over-corrected for distance vision, and both multifocal contact lenses are under-corrected for the Add power requirement of the subject. Batches and sets of multifocal contact lenses are also described.
摘要:
Optical coherence tomography (OCT) systems are used to measure lenses. The present methods use an OCT system to obtain one or more images of a lens. For example, an OCT system can be used to obtain section images, surface images, or combinations of section images and surface images of vision correcting lenses, such as contact lenses, intraocular lenses, corneal onlay lenses, corneal inlay lenses, and spectacle lenses, or non-vision correcting lenses, such as optical instrument and diagnostic instrument lenses. The images can be used to determine features of the lens, such as surface shapes, thicknesses, curvatures, lens powers, and edge profiles, among others. The present methods include lens metrology methods, lens design methods, and lens manufacturing methods.
摘要:
Optical coherence tomography (OCT) systems are used to measure lenses. The present methods use an OCT system to obtain one or more images of a lens. For example, an OCT system can be used to obtain section images, surface images, or combinations of section images and surface images of vision correcting lenses, such as contact lenses, intraocular lenses, corneal onlay lenses, corneal inlay lenses, and spectacle lenses, or non-vision correcting lenses, such as optical instrument and diagnostic instrument lenses. The images can be used to determine features of the lens, such as surface shapes, thicknesses, curvatures, lens powers, and edge profiles, among others. The present methods include lens metrology methods, lens design methods, and lens manufacturing methods.
摘要:
The present invention provides a common interface among device drivers 5 operating in the kernel 8, for increasing data transfer speeds and improving data integrity. A common interface driver 7 is provided among device drivers 5, which control devices 6 connected to a computer. The common interface driver 7 operates in the kernel mode 8 and provides an interface with the application program 4. The common device driver 7 receives and analyzes commands from the application program 4 and outputs instructions to each of the device drivers 5.
摘要:
One embodiment of the present invention is a visual field tester that includes: (a) a projection screen; (b) a stimulus projection system that projects a light stimulus onto a first side of the projection screen; and (c) a background projection system that projects background light onto the first side of the projection screen; wherein the stimulus projection system includes: (i) a first rotatable disk having an aperture; (ii) a second rotatable disk disposed in the aperture; and (iii) a stimulus radiation projector that includes a stimulus radiation source and a radiation projection lens system that are configured to project the stimulus from the second disk onto the first side of the projection screen.
摘要:
The present invention provides a common interface among device drivers 5 operating in the kernel 8, for increasing data transfer speeds and improving data integrity. A common interface driver 7 is provided among device drivers 5, which control devices 6 connected to a computer. The common interface driver 7 operates in the kernel mode 8 and provides an interface with the application program 4. The common device driver 7 receives and analyzes commands from the application program 4 and outputs instructions to each of the device drivers 5.
摘要:
The present invention provides a common interface among device drivers 5 operating in the kernel 8, for increasing data transfer speeds and improving data integrity. A common interface driver 7 is provided among device drivers 5, which control devices 6 connected to a computer. The common interface driver 7 operates in the kernel mode 8 and provides an interface with the application program 4. The common device driver 7 receives and analyzes commands from the application program 4 and outputs instructions to each of the device drivers 5.
摘要:
One embodiment of the present invention is a visual field tester that includes: (a) a projection screen; (b) a stimulus projection system that projects a light stimulus onto a first side of the projection screen; (c) a background projection system that projects a background light onto the first side of the projection screen; and (d) a lens system disposed on a second side of the projection screen that directs light transmitted through the projection screen to a predetermined location.