Quote Originally Posted by Brutal_Dreamer View Post
Very interesting eye. Do these geckos have trouble seeing or any sight issues? Do you know why the eye of this species is evolved to this pattern? cheers,
BD
I honestly don't know why geckos have such unusual patterns to their eyes such as this one. (The eyes of this type of gecko strike me as a neat template for Cin to use as a stepping stone design. )

But as far as eyesight goes, no they don't have any sight issues at all. Most, being mainly nocturnal, need pupils which can open wide at night but can close down tightly during the day. An issue which takes on even more importance when one considers that most geckos do not have eyelids. Rather, like snakes, most have a transparent scale referred to as a "brille" or "spectacle" to protect the eye from mechanical damage. And like another group of animals known for excellant night vision -- the cat family -- most geckos have pupils that are vertical slits. In many geckos, this pupil is taken a step farther and is actually a zigzagged slit. This enables their pupils to be closed down to allow only a few pinpoints of light to enter the eyes so their sensitive eyes are not overwhelmed by harsh daylight. To further elaborate as to how good their eyesight is (in nocturnal species -- diurnal ones are a different story), these animals can discriminate between colors even in dim moonlight whereas we humans cannot. The eyes of at least some of these nocturnal gecko species is estimated to be almost 350 times stronger than ours when it comes to seeing color.