Yes they are!
Yes, gecko species with eyelids are able to blink and close their eyes.
maybe due to hepititis or liver function was not ok!
Most geckos have no eyelids. Unlike snakes, they do not have a protective covering over their eyes, so they use their tongues like windshield wipers. Few geckos do have eyelids despite the facts.
Normally they sleep in the afternoon. the lay down, close there eyes (they do have eyelids) and sleep.
the crested gecko has a clear membrane called a brine. This brine allows them to have their eyes fixated at all times. Living in a tropical envoirenment, the crested gecko is exposed to rain daily and the rain is able to slide off the brine. This also allows the gecko to have a view of it's surroundings at all times. Because the crested gecko is an semi aboreal species, they do not need to dig into soil often. Most gecko species with eyelids are able to close their eyes while burrowing.
a blue gecko
Big Bird's beak is yellow, and his feet are orange.
gecko, grand caymon blue iguana
In my theory it may be something to do with being nocturnal; however as an alternative they lick their eyesThe crested gecko (R.Cilatus) is a nocturnal species and have no eyelids, as the leopard gecko (e.Macularis) is a nocturnal species and do have eyelids. In every environment is a food chain, Geckos are not so high on the charts and almost anything can eat an animal that weighs 30-80Grams and only reach 9". Being an arboreal species living 3-12Feet of the ground, any predator over top can quickly snatch a crestie with ease. Crested geckos (along with all of their closely related cousin's [R.leachianus, R.Sarasinourim, R.auriculatus, R.chahoua etc.]) are animals with extremely weak jaws (in comparisson to other gecko species), robust body's, and an anchor as a tail, must be aware of their surrounding's. Their eyes being fixed open at all times allows them to do so. Most species of gecko with eyelids, are ground dwellers and usually burrow within the dirt. Having the ability to close their eyes keeps dirt, sand and mud from entering the eyes.
Yes
Geckos have 4 limbs equipped with claws or setae. A detachable tail to escape harms way. Movable eyelids or a brine. a slow metabolism, and low water intake.