Corneal topographer

A corneal topographer having illumination, image capture and image processing subsystems, wherein analysis involves registration of the whole image sequence to compensate for saccadic or other eye movements that occur in the time interval between capture of successive images;

• next, image processing determines the two edges of the slits as they are shown on the image;
• the edges are then converted into mathematical curves;
• and
• the curves are then used to determine the external shape of the cornea, the inside surface of the cornea, and all the local shape variations in these surfaces.

A method of corneal topography, comprising:

• projecting a series of preselected different stationary patterns of one or more slits of light in ordered succession onto the surface of the cornea;
• capturing an image of each projected pattern:
• and,
• converting the images into topographical information of the cornea.

A corneal topographer, comprising:

• means for projecting a series of preselected different stationary patterns of one or more slits of light in ordered succession onto the surface of the cornea;
• means for capturing an image of each projected pattern:
• and
• means for converting the images into topographical information of the cornea.