Most people are aware that there are various levels of impairment in human vision with the most common being nearsightedness (myopia) and farsightedness (hyperopia). A dog’s eyes are placed farther to the side of the head than the eyes on a human face, which does mean that vision is slightly different for a person than a dog, which much less overlap between the two eyes. Since the field of vision in the eyes of a dog don’t overlap as much, they have a smaller overall area with true depth perception. While this may be less three-dimensional vision than humans, the side positioning of the dog’s eyes ensures they can see much farther backwards than humans. Not surprisingly dogs can also have perfect vision, visual impairments or vision problems such as myopia and hyperopia, just like people. Since dogs with nearsightedness or myopia can see better up close than they can far away, there are some interested issues with regards to understanding how myopia may have developed within breeds and lines.
