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I've been wondering for a while now if our indoor lighting is too dim. Even in the shade during midday you're looking at 20,000 lux. Overcast days look dark and

I've been wondering for a while now if our indoor lighting is too dim. Even in the shade during midday you're looking at 20,000 lux. Overcast days look dark and dreary and they're on the 1000-2000 lux range. Meanwhile home lighting is well below the 500 lux range, if not even in the 100-200. I even suspect that the current near-sightedness epidemic is caused by people spending too much time in dim lighting. Maybe if our indoor lighting was brighter our eyesight would not adapt to become near-sighted as much.

BenoitEssiambre 2y ago
Yeah there's definitely that aspect too. Though nowadays, led lighting is so efficient that you can get a lot of brightness on reasonable wattage. That's not enough for the light to feel natural though, you also have to have the parallel rays. And then there's also challenges with brighter lighting to set it up so it's not uncomfortably bright in your field of view or blinding you :-)
Full_Clark 2y ago
> I even suspect that the current near-sightedness epidemic is caused by people spending too much time in dim lighting. Maybe if our indoor lighting was brighter our eyesight would not adapt to become near-sighted as much. It's not that eyes are adapting to low light so much as the fact that exposure to 10k lux stimulates the release of neurotransmitters which prevent the eye from growing too quickly. Last I checked, the recommendation is for children to spend 2+ hours per day outdoors in sunlight. Morning and evening aren't sufficiently lit so it really comes down to school and after-school care scheduling enough outdoors time.