The image in my right eye is substantially larger than the left eye image in the vertical plane only; so much so that I must shield one eye to read or use the computer.  I am 68 years old and in the last 10 years had cataract surgeries in both eyes with intraocular lens replacements.  I also have had minor vitriol separations in both eyes for the past 20 years.
    During this time I have seen four ophthalmologists and two optometrists.  All were aware of my aniseikonia and tried to address it, but none had any way to measure it quantitatively or test it qualitatively (e.g., with "size" lenses).  Cataract surgeries and eyeglass prescriptions did nothing to change the aniseikonia.
    Searching the Internet for publications and clinics dealing with aniseikonia (there aren't very  many), I came across the Yahoo Groups website for aniseikonia, which eventually led me to Dr. De Wit's Optical Diagnostics website.  I volunteered to test a beta upgrade version of his Aniseikonia Inspector program. 
    Aniseikonia Inspector is easy to use and Dr. De Wit is very responsive in analyzing the results and providing interactive guidance using the computer software program.  He personally responded in depth to each of my inquires within 24 hours; quite an accomplishment given the large separation of our time zones.  The nearest alternate clinic is several hundred miles away at Ohio State University. They also use Aniseikonia Inspector.  Interactive testing over the Internet is much more convenient.
    The results Dr. De Wit provided from the tests showed excessive vertical magnification (~ 25 %)  in the right eye image, but only in the center of the field.  This distortion deceases rapidly off-axis.  Thus I have stereoscopic peripheral vision, but cannot register objects in the center of the field.  The cause appears to be an epiretinal membrane near the retina, probably a result of vitriol separation. 
     Although not correctable with a change in eyeglass prescription, the detailed Aniseikonia Inspector graphic results showing magnification distortion versus field angle for the first time gives me a quantitative description of my problem  With that I can discuss options with my ophthalmologist and optometrist at my next annual exam that they otherwise have no facility to measure.
    My experience with Dr. De Wit has been very useful, and enlightening, and Dr. De Wit has been very courteous and responsive to every inquiry.  With Aniseikonia Inspector test results I have a thoroughly objective, detailed description of my aniseikonia.  I know of no other way I could get these results.  Moreover, Dr. De Wit's interaction has given me confidence in understanding it.
Gerald Spade, retired engineer
Madison, WI, USA