All glasses create aniseikonia to one degree or another. And some patient’s adapt easily, while others do not. It’s hard to test for, and, you can’t predict its impact simply by looking at a prescription. But with the SHAW lens method you don’t have to guess.
Use motor fusion limits with our software and you can see predicted patient binocular vision problems and solutions. Use it for every patient and know for sure when to use a SHAW lens.
In fact, the University of Waterloo and the University of Auckland both use the SHAW lens algorithm as a best practice for every patient. They use the design comparisons to determine whether an iseikonic lens is appropriate correction for that patient. It is the surest way to ensure that every patient gets the best lens solution possible.
Patient symptoms can indicate negative effect of their current glasses. If a conventional lens has negative aniseikonia attributes, then aniseikonia is present and the patient’s glasses could be causing the symptoms. You can see all that with the SHAW lens software.
But why guess? Perform the SHAW lens method for all patients and know for sure. You can see when a SHAW lens will make a difference for a patient, and when it won’t.