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Perhaps there's correlation between sunlight exposure and being out in "large spaces" where the majority of what you're seeing is farther away than your homes'
by nwatson 9y ago
Perhaps there's correlation between sunlight exposure and being out in "large spaces" where the majority of what you're seeing is farther away than your homes' walls. Having developing eyes focus on a mountain panorama or distant trees across a lake leads to different stresses on the eyeball ... or perhaps some different training for physiological systems that deal with focus.
- jessriedel 9y ago> Perhaps there's correlation between sunlight exposure and being out in "large spaces" where the majority of what you're seeing is farther away than your homes' walls. This was one of the other leading hypotheses for a long time. More recent data came down pretty decidedly on UV light rather than focal range. See my other comment: https://news.ycombinator.com/item?id=16248851 https://news.ycombinator.com/item?id=16248851