The tapetum lucidum reflects with constructive interference, thus increasing the quantity of light passing through the retina. This serves to match the original and reflected light, thus maintaining the sharpness and contrast of the image on the retina. The tapetum functions as a retroreflector which reflects light directly back along the light path. However, the tapetum lucidum cells are leucophores, not iridophores. The tapetum lucidum, which is iridescent, reflects light roughly on the interference principles of thin-film optics, as seen in other iridescent tissues. Presence of a tapetum lucidum enables animals to see in dimmer light than would otherwise be possible. The color of the eyes of this morph has a spectrum of bright yellow to rich gold.Choroid dissected from a calf's eye, tapetum lucidum appearing iridescent blue But according to the creator of the Tremper Albino named Ron Tremper, he was able to produce a new morph which has a yellow colored eyes which he called as 'Xanthic'. The yellow colored eye is not yet confirmed if it really does exist. They are also more likely to retain the red color of their eyes until adulthood. Among the identified strains of albino leopard gecko, the bell albino strain has the reddest eye. On the other hand, albinos which do not have a red eye may have beige ones. However an incubation of a high temperature that reaches up to 90 degrees Fahrenheit will increase the chances of developing red eyes. Leopard geckos that are albinos will not necessarily possess this characteristic. This characteristic is caused by the albinism which means that there is no dark pigment in the eyes to hide the underlying blood vessels of the retina which will result to an eye which appears to be red. Next to solid black eyes are the solid red eyes or the ruby eyes.

This makes it very difficult to distinguish the pupils from the iris. This eye characteristic is found in leopard gecko morphs with a solid black eye instead of metallic tinged eyes. Morphs in leopard geckos created a characteristic of a 'snake eyes' or also termed as eclipse. Light in day time can seriously damage the eyes of the leopard geckos. This ability enables them to protect their eyes from the bright light a known defense mechanism of leopard gecko. This is also the reason why during day time, the pupils of the leopard gecko closes up into slits. This characteristic is very important because leopard geckos are nocturnal meaning, they are most active at night.

The eyes of the leopard gecko are very sensitive to light, thus making it very adaptable in the dark. Normally, the leopard geckos that are found in the wild have a dark slightly metallic tinged color of the eyes. Not only should the patterns and the background should become morphs but so are the color of their eyes. In the world of leopard gecko, the greatest achievement of leopard gecko breeders is to be able to create a morph in the variety of leopard geckos. Therefore, determining if the eye color of your leopard gecko is normal will require sufficient knowledge about the different characteristics of the leopard gecko. The variation in the eye color of the leopard gecko will differ from one leopard gecko to another.

Flashlight dark sheep eyes