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Sweetheart, I've had that problem too.
Originally posted by unnamedninja
It really just sounds like a case of an overactive imagination in you and some eczema (on your boyfriend's back)
How clearly did you see the slit thing, was it clear as day or just one of those things you're not quite sure if you imagined or not? You are probably just seeing things fed to your imagination by the content on this site.
On the serious side, sounds like a contact problem to me.
Snakes have rods and cones in their eyes, as do we, though in different numbers. They do not have the diversity colored oil droplets (presumed to have been lost when snakes when nocturnal and subterranean) in their photoreceptors that mammals and birds do, so, while they do have color vision, it isn't as broad ranged as ours is. They do have a yellow filter which, filling the lens, absorbs ultraviolet light, protecting the eye.
Snakes use a combination of infrared vision (developed in the trigeminal nerve), variable (by species) visual acuity and color detection, limited eye mobility, and chemosensation to find prey and recognize features in their environment (including their keepers).
Lizard (including geckos) and turtle retinas contain multicolored oil droplets in their photoreceptors, so they can perceive color. The opsin proteins in the cones in the eye are "calibrated" to detect different wavelengths. In many species, this enables them to see into the higher wavelengths beyond the scope of unaided human vision: into the UV range.
Nocturnal reptiles usually have smaller eyes than diurnal ones, but relatively large pupillary and lens aperture and cornea. This improves their light-gathering ability, but at the same time reduces visual acuity.
Lizards can focus on near and far by squeezing or stretching their lenses, using the ciliary muscles and annular pads. Pupils dilate and contract in response to light. Nocturnal geckos like the tokay have a stenopaic pupil: contracts into a vertical slit composed of a linear array of dots. Some nocturnal lizards have slit pupils, others are round. Lizards, unlike other reptiles, have a choroid body, called the conus papillaris. Projecting out into the vitrious humor, it nourishes the cornea.
Source - Reptile Vision
Originally posted by Zaphod58
That's very common. I'm night blind. I see great in fairly low light, and can barely see at all when a bright light comes along. Some friends looked at my eyes one night and my pupils were dilated to cover my iris. You couldn't see my iris at all.
Originally posted by stumason
If he has trouble seeing at night, I would doubt he is a reptile, as most reptiles have excellent night vision and can see frequencies that Humans cannot.
Originally posted by RuneSpider
I get rough patches on my back prety often. Sometimes it's from leaning against something and picking up the texture, or I have zits on my back. You say he's twitchy... how twitchy? Ever had your eye kinda spaz a bit?
MY question is how much do you care if he's reptillian?
Originally posted by Zaphod58
Actually I was talking about the requiring glasses to drive at night. I've known several people that happened to. They had 20/20 during the day, and had glasses for night.
Originally posted by 123143
My advice: Watch him on sunny days. If he sits on a rock all afternoon, he's probably a reptile.
Originally posted by ValhallasValkyrie
Call me a skeptic, but I think I agree with the suggestion that you might be imagining this thanks to everything you have read on here.
I think there would be other signs/symptoms if he was a reptile.
I don't know a lot about reptilians but.. I seem to remember a show from when I was growing up called V and there were reptilian aliens who could look like human. If it is anything like that, then hmm.. what is his diet like?
Hmm.. might have to ask my co-conspirator to fill me in this a little bit more..