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==Parietal Eye==
 
==Parietal Eye==
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A well developed parietal "eye" (with a rudimentary lens and retina) is found on the dorsal midline in some lizards, including the green iguana, blue-tongue skink and water dragon. This sensory organ, connected to the central nervous system and the pineal gland by the small parietal nerve, functions in hormone production (including reproduction) and thermoregulation. Although sensitive to changes in light, it cannot form images. Sometimes referred to as "pineal eye" or "third eye", it it visible as an opalescent gray spot on the top of some lizard's heads.
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A well developed parietal "eye" (with a rudimentary lens and retina) is found on the dorsal midline in some lizards, including the [[Green Iguana|green iguana]], [[Stump-tailed Skink|blue-tongued skink]] and [[Water Dragon|water dragon]]. This sensory organ, connected to the central nervous system and the pineal gland by the small parietal nerve, functions in hormone production (including reproduction) and thermoregulation. Although sensitive to changes in light, it cannot form images. Sometimes referred to as "pineal eye" or "third eye", it it visible as an opalescent gray spot on the top of some lizard's heads.
    
==Eyelids==
 
==Eyelids==
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