What does the term "aniseikonia" refer to?

The term "aniseikonia" refers specifically to a condition where there is a discrepancy in the perceived size of images between the two eyes. This visual phenomenon occurs when one eye receives images that appear larger or smaller compared to what the other eye sees. This discrepancy can lead to several visual disturbances and can affect depth perception and binocular vision.

In terms of underlying causes, aniseikonia may result from various factors, including differences in refractive error, the geometry of the eyes, or even certain types of eye surgery. Corrective lenses or specific vision therapy may be used to help mitigate the effects of aniseikonia, as it is particularly relevant in the context of eye care and vision correction.

Other options may relate to conditions and factors affecting the eyes but do not pertain to the issue of image size perception between both eyes. For instance, differences in eye color, infections, or growths on the eyelid do not address any asymmetry in visual perception that characterizes aniseikonia.