HOLLADAY DIAGNOSTIC ANALYSIS


The bottom left map is the 
‘Profile Difference Map’ which 
displays the difference 
between an aspheric surface 
that is the closest match to 
the central cornea and the 
actual corneal power.

The bottom right map, 
’Distortion Map’, predicts the 
patient’s visual acuity based 
on the optical calculations for 
different portions of the cornea.  
The predicted acuity for a 3 mm 
pupil is given in the table at the 
bottom of the screen.