The TOMARK, from Geuder, makes it possible to indicate the final torus position on the cornea. The indication is done while patient is sitting upright to prevent faulty markings due to cyclotorsion. The high-precision marking is the basis for best vision prognosis.
By briefly pressing on an ink pad, the TOMARK cornea marker takes up enough colour. In many cases, for the sake of patient comfort, there is no need for a lid lock.
At the slit lamp , the cornea marker is simply inserted into the holder of the tonometer and adjusted to the horizontal axis line of the tonometer holder.
The horizontal can also be adjusted on the hand-held pendulum instrument after attaching the cornea marker.
The angle to be marked is simply set on the easily readable scale. Looking through the cornea marker simplifies the centered marking on the cornea. After just 5 seconds of contact with the cornea, TOMARK leaves a very clearly recognszable mark.