Abstract: Examples of methods and apparatus for an accurate measurement of the anterior surface of the eye including the conical and scleral regions are disclosed. The measurements provide a three-dimensional map of the surface which can be used for a variety of ophthalmic and optometric applications from astigmatism and keratoconus diagnostics to scleral lens fitting.

Abstract: Examples of methods and apparatus for an accurate measurement of the anterior surface of the eye including the corneal and scleral regions are disclosed. The measurements provide a three-dimensional map of the surface which can be used for a variety of ophthalmic and optometric applications from astigmatism and keratoconus diagnostics to scleral lens fitting.

Abstract: Examples of methods and apparatus for an accurate measurement of the anterior surface of the eye including the corneal and scleral regions are disclosed. The measurements provide a three-dimensional map of the surface which can be used for a variety of ophthalmic and optometric applications from astigmatism and keratoconus diagnostics to scleral lens fitting.

Abstract: A method of obtaining a retro-illumination image using the beacon from an ocular wavefront path and the camera for the corneal topography path of the combined system. A digital image of the retro-illuminated view of the IOL, iris pattern and sclera is obtained. An interactive display of the retro-illuminated image is presented to the user to allow them to identify the orientation marks on the IOL. These marks identify the orientation of the IOL and an overlay line can be used to display this orientation. In addition, a 360 degree overlay can be used to enhance the display of this orientation line.

Abstract: Presbyopic contact lenses that provide improved vision quality by use of optical zones which are not symmetric about the lens optical axis. The contact lens includes an optic body sized and configured to be received in an eye (or eyes) of a presbyopic patient having a front surface with a front optical center and a back surface with a back optical center, and having a lens optical axis intersecting the front surface at the front optical center and the back surface at the back optical center, and having optical zones which are not symmetric about the lens optical axis. The lens construction produces an asymmetric point spread function which enables any resulting asymmetric stray light to be steered in a predetermined direction.

Abstract: A method to reduce ocular chromatic aberrations using a lens or other spatial structure to selectively band-pass filter transmitted light of certain wavelengths. The ocular lens overcomes the negative effects of the wavelength band pass filter lenses while maintaining its ability to reduce the negative effects of chromatic aberration. The band-pass filter is applied in one or more concentric zones and or angular regions. The lens power is adjusted in concert with the band-pass filter wavelength to minimize aberrations. Variations include the application of the band-pass filter being applied to an angular region and no filter is applied to another. Alternatively the band-pass filter is not applied to one or more concentric ring regions and is applied to one or more angular regions. The band-pass filter can be applied to the surface of the lens or spatial structure, or applied to the lens material.

Abstract: A method to reduce ocular chromatic aberrations using a lens or other spatial structure to selectively band-pass filter transmitted light of certain wavelengths. The ocular lens overcomes the negative effects of the wavelength band pass filter lenses while maintaining its ability to reduce the negative effects of chromatic aberration. The band-pass filter is applied in one or more concentric zones and or angular regions. The lens power is adjusted in concert with the band-pass filter wavelength to minimize aberrations. Variations include the application of the band-pass filter being applied to an angular region and no filter is applied to another. Alternatively the band-pass filter is not applied to one or more concentric ring regions and is applied to one or more angular regions. The band-pass filter can be applied to the surface of the lens or spatial structure, or applied to the lens material.

Abstract: The present invention describes a multi-focal intraocular lens for the human eye. The intraocular lens of the present invention provides improved vision quality over a range of object distances without producing glare or halos. It also provides non-symmetric, or nearly symmetric, optical zones about the lens optical axis.

Abstract: An intraocular lens, with equal conic surfaces, is intended to replace the crystalline lens in the posterior chamber of a patient's eye, in particular after a cataract extraction. The lens provides optical power to focus objects onto a patient's retina. In addition the lens surfaces are shaped to reduce optical aberrations at the retina and are tolerant to lens tilt and decentration within the eye. The lens is designed to have zero longitudinal ray aberrations at a specific ray height.

Abstract: Improved fluid for intraocular infusion and irrigation and methods of preparation and use. The fluid is an aqueous physiologic saline solution containing from 2-15% by weight of an artificial, substantially non-antigenic oncotic agent of a colloid type, such as dextran having an average molecular weight in the range of from about 1,000 to 40,000. The solution also contains NaCl, CaCl.sub.2, dextrose and sodium bicarbonate, and is adjusted to have an osmolarity in the range of 260-400 mOsm/L and a pH in the range of from about 7 to 7.8. The solution may be used as a replacement fluid for the aqueous or vitreous humor, for the reestablishment of intraocular pressure during or after surgery, as an irrigating fluid during phacoemulsification, and generally for external eye surface rinsing during cataract surgery. The solution results in improved lens maintenance and corneal endothelial function during procedures such as vitrectomy, irrigation and aspiration of cataracts, and in phacoemulsification.

Abstract: A combined operating microscope and illumination system having a coaxial and/or par focal light source for illumination for precise instrumentation during intraocular and other operating procedures. Stereoscopic view for a surgeon and an assistant is provided with an alternatively selective light diverting system in the assistant's light system for photographic purposes. Coaxial and par focal slit illumination are achieved by a light source movable on an arc shaped tract without reflecting light through the surgeon's lens system thereby permitting additional space for a second light system to the assistant without reducing that available to the surgeon.