It isn't necessarily an autistic trait, in evolution of the eyes at a basic level, they were designed to pick out patterns to locate prey, mates, plants, etc. Humans are omnivores and use their eyes for all of the above, like picking out a deer from between tree branches, or selecting a ripe fruit based on intensity of color, noticing blush in cheeks/lips. A large concensus is that autistic traits are more basic traits of the human mind that are amplified or more connected than the newer traits dealing with social interaction in human evolution (some NTs have trouble with traits that ASDs have, much like we have social troubles, so its kind of more like we are complementary rather than set apart).
For me, I've always been a visual-spatial learner, and I tend to pick out patterns in wood, tiles, upholstery, etc. In my origami work, I've also been able to reverse engineer designs just based on looking at a picture of them, the same goes for looking at a broken appliance or other device and knowing what piece or shape of piece is missing for it to function. There was also a time in my greenhouse class where I suggested we align the plants on the tables into hexagon shapes for best allowance of space between them, which baffled even the teacher, and we had a very successful crop that year.
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BAP: 103 aloof / 100 rigid / 103 pragmatic
AQ: 40 EQ: 8 SQ: 114
Aspie: AS-156/200 NT-56/200
RAADS-R: 189 total
Diagnosed 9/2013