Abstract: Corneal collagen crosslinking of CKR™-treated cornea results in a long-lasting, potentially permanent correction of corneal shape and improved vision.

Abstract: Continuous, aspheric optical molds for reshaping the surface of the cornea having an inner concave surface matched to the topography of the cornea. The curvatures of the molds are modified from a curve matched to a patient's corneal topography to include a flattened pressure zone applying relative pressure and thereby displacing underlying corneal tissue, a steepened relief zone raised away from the surface of the cornea to receive displaced corneal tissue, and a flattened anchor zone to control and direct movement of displaced corneal tissue into the relief zones.

Abstract: A corneal topographer including a directional light source, a CCD and a positioning stage all controlled by a computer for automatically centering and focusing the corneal image onto the CCD. The computer receives video signals from the CCD representing the corneal image, which is digitized and displayed on a real-time basis on a monitor screen. A reflection of the directional light source is positioned to align in the center of the corneal image. An operator moves an optics head to place the corneal image on the monitor screen, roughly focuses the image, and then commands the computer to take over. The computer calculates the distance between the image of the directional light source and the center of the CCD, and activates the positioning stage to move the directional light source image to the center. The positioning stage is moved within a focusing range, where several positions and corresponding intensity characteristics of the directional light source image are tabulated.

Abstract: There is disclosed apparatus which comprises a corneal topographer including a video camera or charge-coupled-device camera system for sensing images of rings of light reflected from the cornea, and means for processing the image rings to produce data useful in determining the contour of the cornea of a human eye.

Abstract: There is disclosed apparatus which comprises a corneal topographer including a video camera or charge-coupled-device camera system for sensing images of rings of light reflected from the cornea, and means for processing the image rings to produce data useful in determining the contour of the cornea of a human eye.