81 results about "Corrective contact lens" patented technology

An anterior chamber refractive correction lens (RCL), preferably a custom anterior chamber refractive correction lens (c-RCL) for visual or optical correcting multiple defects or problems of the eye.

Acoustic touch apparatus comprising a substrate having first and second surfaces capable of propagating surface acoustic waves, the second surface comprising a touch region and the first and second surfaces coupled via a rounded connecting surface; at least one acoustic wave transducer on the first surface; and at least one reflective array on the first surface. The transducer is capable of transmitting or receiving waves to and from the reflective array. The substrate and reflective array can acoustically couple waves between the first and second surfaces. The substrate has a border region on the first surface adapted to hide the transducer and reflective array and preclude distortion of waves propagating over a window in the border region. The border region may have a border layer except at the window and a corrective lens is used proximate the window, or the border region comprises discolored glass except at the window.

A lens and a method of making lenses suitable for color blindness correction are disclosed. The corrective lens may be formed of an optically transparent base material, which is tinted to the desired color for correction by immersion in a colorant dye. The color tinted lens is then tinted by a neutral tint dye to render the lens observable as a regular corrective lens. If desired, the dyes may be heated during immersion.

Eyewear is equipped with at least one lens and at least one pinhole aperture. Lenses and apertures may be used in place of or in combination with one another, and may be disposed in or on full frame, half frame, wire frame or rimless eyeglasses. The lens may be a corrective lens. Pinhole apertures may have a diameter no greater than about 3 mm, and a diameter / thickness ratio is no less than about 66.7%.

The present invention is directed to a contact lens design and methods of manufacturing, fitting and using such lenses. As an example, the contact lens may be designed to be used in an orthokeratology treatment program. The contact lens according to the invention overcomes the deficiencies of the prior art, and provides a design which allows proper fitting of a patient, whether for corrective contact lenses or for use in an orthokeratology treatment program. The ability to properly fit a patient will alleviate, at least to a great degree, corneal abrasions from poorly distributed bearing, corneal warpage from decentered lenses, edema from tight fitting lenses and discomfort. The design allows a great deal of flexibility to the fitter to enhance the functionality of the lens. The lens of the present invention includes a central zone and first annular zone located adjacent to and concentrically around the central zone. The two zones are integral with each other and the radius of curvature of the first annular or connecting zone is greater than that of the central zone. In addition, such a design provides a vast amount of alternative methods of manufacture, and lifts the constraint of requiring the origin of the radius of curvature for the first annular zone curve to reside on the central axis of the central base curve or zone.

The design of a corrective lens combines the measured aberration with decentration and rotation of the lens to design customized optical surface profiles to reliably achieve vision correction.

The invention is directed to a contact lens design and methods of manufacturing, fitting and using such lenses. The contact lens may be designed for use in a corneal refractive therapy (CRT) program. The lens provides a design which allows proper fitting of a patient, whether for corrective contact lenses or for a CRT program. Due to the rational design of the lenses according to the present invention, a minimal number of lens parameter increments can be identified to cover the range of common corneas. It is therefore possible to provide pre-formed lens buttons or blanks which are easily formed into a final design, thereby simplifying and speeding up the treatment process. Further, any adjustment of the lens design which may be required based upon trial fitting or the like, is easily envisioned and implemented by the fitter.