The pitch-dark night in glowing eyes, can be very frightening for everyone. Some animals eyes, especially at night because it shines behind the retina private, they have a reflective surface. Called the tapetum lucidum of the surface, found in some animals, but all of them that exist in the eye of the essence of the membrane layer. It helps animals see better in the dark. When light enters the eye, a photo that transmits hit information to the brain receptors. But sometimes the light photo-receptor, not tapetum lucidum acts as a mirror so as to return it a second chance. Tapetum lucidum, the eyes of animals that causes a reflective surface to look like it was glowing in the dark. There is this layer of the eye or nocturnal nocturnal animal species many, and people do not have tapetum lucidum in their eyes. Tapetum lucidum is found in vertebrate and invertebrate animals, but is more common in mammals.

Anatomy and physiology of the eye

Rods and cones in the eye, called photo-receptor cells, which contains sensory cells detect light energy, and functioning. Distinguishes between light and darkness, rods, cones allocates colors. These sensory cells and the brain through the optical nerve which transmits the signal to an image-forming layer of the eyeball is the retina, which covers. Tapetum lucidum of all the animals that have the same color as the eyes don’t see. The reason is due to the different materials such as zinc or riboflavin in the Society of an animal. Additionally, there are varying amounts of pigment in the retina, and this can affect the color. Age and other factors also can change the color of the eye so that the brightness in two different colors of the same type may have the eyes to see even the dog.For example, while it’s glowing eyes are usually a bright yellow color of a Siamese cat, cats in bright colors often Yesil has glowing eyes. Schnauzer dogs with shimmering turquoise eyes. Some animals, humans , like behind the retina is located, and the light-absorbing pigmented cell layer called the choroid.

Tapetum Lucidum Membrane

Called the tapetum lucidum behind the eye in some animals provide an additional layer of. This reflective membrane is located directly behind the retina. In other words, when light enters the eye, the membrane exits. Tapetum lucidum, these animals, their eyes mirror in dark environments the brightness of the eye that gives a quality that makes it is called. The brightness of the eye to produce a light source into the eyes of the animal should be directed to the tapetum lucidum, which must be reflected from it. The reflected light shining out of the eyes of Animals shows. The purpose of current or lucidum the animals who live in the tapetum to develop a vision for low light areas.

The brightness of the eye and night vision

Contributed mainly to the presence of tapetum in the eye, and more accurate in low light situations allows you to see animals at night. Tapetum lucidum in his eyes in most of the animals are mammals, but some reptiles, amphibians and invertebrates also use this reflective membrane. Depending on the brightness of the eye color of animal, orange, yellow, Yesil, or blue may appear. Different species of the eyes, color in the eyes and the angle of the light shining on the eyes as well as depending on the angle, different colors, too, shines. The brightness of the eye color may change as the animals get older. Some animals have glowing eyes at night brighter than the others. However, there is a swap for improving your night vision. Bright eyes in the eyes of the animals that can best produce the cone has less brightness. As a result, they may be completely color blind or color is limited to the restrictions.

Glowing-Eyed Hunters

Tapetum lucidum most of the animals in Night Hunters and usually everyone that sees the cat’s eyes glow in the dark. House cats and big cats like members of the cat family, have eyes that reflect the light in the darkness. Dogs, foxes, wolves, ferrets, and other predators such as crocodiles exhibits bright eyes. Improved night vision, and trail the movements of these carnivores hunting in low light conditions makes it easy for you to find. There are many fish species in the reflective membranes, and this helps to hunting in deep water with very little light. Some bird species, such as owls, the eyes might seem clear, although the tapetum lucidum is the layer in your eyes.

Without Predators, The Eye Brightness

A few species of hoofed animal, the tapetum lucidum is the layer with the eyes. Deer are active at dusk and dawn, before sunrise and after sunset also benefits from views advanced. Also in cattle, which horses in the daytime and are active at night, as well as the brightness of the eye. Tapetum lucidum, in the dark for hunters to help seize their prey have evolved, although DICE may be developed as a defense mechanism to detect these night hunters. His tapetum lucidum in the eyes of non-hunters among the, squirrel, pig, camel and kangaroo courts.

Bibliography:

* The Texas Parks and Wildlife: Eyeshield

* The British Journal Of Ophthalmology: Mirror, Mirror On The Wall

Â € ¢ National Public Radio: In The Dark Milks His Eyes Shining?