COMPUTERIZED VIDEOKERATOSCOPES

Basic Procedures to Capture an Image

The pattern is aligned on the patient’s cornea, by the use of a joy stick or keyboard, while viewing the eye in the monitor.  The different instruments have different alignment guides which are seen on the screen.  

In addition to proper alignment, the 
pattern is brought into focus.  Many 
instruments have automated the final 
focusing.  Once the patient is positioned 
and the instrument aligned the patient 
is asked to blink and then stare at the 
fixation target.  The image is then 
captured by pressing the appropriate 
button on the instrument.

Consult the section of the particular instruments for details of how to take the images and use some of the common topographers (from the topography menu).