Optical problem with high plus lenses ?

Hello Parshapriya,

There are times when this effect occurs naturally.  Every time you look to one side, one of the clues that your brain processes is the fact that the image of what you are looking at with each eye is different.  This is a normal aniseikonia, and one that your brain uses to help process object distance.  It is a binocular distance clue, which is one of many clues that the brain uses to keep track of the objects in your immediate vicinity.

The separation between the photoreceptors in the retina and the way the images are processes in the visual cortex can possibly cause a difference in image size.  This is anatomical aniseikonia.