Clean Dog Eyes Health. Dog Eye Sight.

The dog's eyes are more sensitive to the movement and to light than human's eyes, but they perceive the outlines in a less clear way that our eyes do. The dog's ocular globe is kind of flattened and even when they can alter the focal length as we do, they can't focus very well. On the other hand, some breeds, as the Collie, are able to detect even the most imperceptible movements, such as the dilatation or the contraction of the human pupil. dog t shirts for dogs

Clean Dog EYE OPERATION

The dog eye is a ball filled with fluids and located in a special orbit opened on the cranial bone. The eyes are kept in their place by very strong muscles that also let them move up and down as well as laterally. The eye surface is formed by a very resistant membrane called sclerotic membrane, that turns translucid on the frontal part of the ocular globe that is named cornea. Some chain link dog kennels are safer then other and protect the eyes.

The crystalline is joint to the ciliar body, a muscle that alters the shape of the first one when it is contracted, letting the dog focus different distances. Besides that, the ciliar body holds and moves the crystalline.

The retina, that covers the back part of the eye, possesses nerves that are sensitive to the light which transfer the picked information to the brain through the optic nerve. Once there, the data is decoded to create an image. There is a reflecting layer called tapestry or tapetum at the back side of the eye that is responsible for that peculiar reflect noticed on the dog's eyes when the they get light. The dogs have a third eyelid (the nictitant membrane) normally folded on the inner angle of the eye. It is visible only when the dog is sick or in bad health, when it gets unfolded in order to protect the eye from falling dog toys. The lachrymal gland produces the tears to keep the cornea wet and clean. The excess fluid is eliminated through some conducts located in the inner angle of the eye that flows on the nose. When these conducts get obstructed, the tears overflow the lachrymal and they are shed over the face, staining the animal's skin and hair.

Due to this particular anatomy, the dogs can't notice the color as humans do. They don't distinguish the intermediate tones between the greenish yellow and the red, going through the orange, even though they can notice all the colors located on the extremes of the luminous spectrum.

THE FIELD OF VISION Is is normal, the dog has a wider field of vision than the man due the shape of its head and the place where its eyes are located on its face. Small dogs as the Pug and the Boxer can usually  take in an angular of 200 degrees, while the Lebrels such as the Saluki or the Greyhound take in a field of vision of 270 degrees. The human eye takes in a field of vision of 100 degrees.

DIFFERENT SHAPES The shape of the eyes and their implantation on  the face, that vary so much from one breed to another, determine the field of sight of the dog.