Notes:

When the electronic spectacle lens is programmed to correct large refractive errors, the retinal image of a point becomes a rosette of 7 points rather than just a single point as we require. If a single point of light produces 7 image points, then every point on an object will be replicated in the same way. The result will be multiple images of the same object.

The fundamental reason why the retinal image becomes replicated is that there aren't enough cells in the liquid crystal lens to accurately shape the wavefront into a highly curved surface. To improve the device's performance so that it can correct large refractive errors will require an increase in the number of independent cells in the array.