VERIFY THE FOCUS AND PROCESSING

The following should also be checked:

1. Determine if any red or yellow 
    rings extended into the areas 
    covered by the brow or nose 
    shadow, that is lines occur where 
    there are no Placido rings.  If so 
    they need removed.

2. Check to see if the limbus was 
    erroneously detected as a ring.  
    If so, it must be removed.

3. See if any red or yellow rings 
    are incomplete where there is 
    an obvious Placido ring visible.
    If so it can be reconstructed.

If any of the problems above are visible, click on the 

If all the checks are okay, click on accept.