Beverly Erlebacher wrote:
> > From: "Robert McCarthy" <[EMAIL PROTECTED]>
> > Date: Thu, 28 Dec 2000 07:22:13 -0500
> >
> > What type of vision do geckos really have, sometimes I think my goldens are
> > half blind, either that or just plain lazy, not sure which.
>
> Well, they are nocturnal, live in dense forest, and catch small invertebrates
> for a living, so I would expect their vision to be optimized for very dim light
> and detection of small moving objects. In the daytime, they are probably
> sleeping much of the time. Since they have no eyelids, it's not obvious
> whether they are awake or not if they aren't moving. :-)
>
To add to this nice post, if you have a gecko that has a "slit" type pupil, it is
likely noctural. Slit pupils allow fuller opening of the pupil and maximum
stimulation of night time vision receptors spread throughout the eye. Concentric
(round) pupils are better suited to diurnal (daytime) geckos as they concentrate
stimulation of day time receptors to the central part of the eye where most of
these receptors are (the fovea if I remember right).
Julie Bergman
http://www.geckoranch.com
GGA lifetime member
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