[1] See [1] what I did there?
I don't think this works on astigmatism though.
There are dopaminergic amacrine cells within the retina and dopamine receptor much more widely.
Here is a reference with some of original citations:
> Dopamine is a key neurotransmitter in the signaling cascade controlling ocular refractive development, but the exact role and site of action of dopamine D1 receptors (D1Rs) involved in myopia remains unclear.
[.. snip ..]
> Therefore, activation of D1Rs, specifically retinal D1Rs, inhibits myopia development in mice. These results also suggest that multiple dopamine D1R mechanisms play roles in emmetropization and myopia development.
1) Your prescription.
2) What your vision is like with the best correction.
It also is possible to have your vision improve without treatment. I have some astigmatism, it's simply impossible to fully correct. My prescription changes a lot, it's possible for the astigmatism to be a bit less of an issue on a particular exam to the point that the best line I can read sometimes changes.
https://d7hftxdivxxvm.cloudfront.net/?quality=80&resize_to=w...
- There are animal model studies which vary environment brightness and show a causal relationship between darker environments and myopia. The animals in the darker experimental groups aren't reading etc, and the animals in the brighter experimental groups aren't in larger cages.
- There are studies on myopia that varied indoor lighting brightness and showed brighter lighting later/decreased myopia onset. Classroom sizes (or distances from desk to blackboard, etc) did not change. These studies also found a bunch of other variables were important including longer sleep time, and less screen time.
Classic example of gene-by-environmental interaction.
Here is a recent reference and meta-analysis:
The leading hypotheses a few years back is that the outdoors is very bright. Brightness levels that cannot be easily reached indoors.
surely when we squint from bright light we are straining the eye. The idea, then, is that our development expects some amount of eye strain growing up.
But I definitely recommend this to people I know with new babies. We do a bad job consciously recognizing the difference between indoor and outdoor light, but they’re orders of magnitude different in actual brightness.
(Just something I've wondered since sunglasses are super prevalent)
We don't yet understand why, but lack of exposure to sunlight is what causes still-developing eyes to grow incorrectly.
Maybe instead of a 50” screen 24” away, a 500’ screen 240’ away.
Also, what if you wear glasses that move points close by (e.g. your screen) to infinity?
For people who can't focus up close anymore (elderly), they move the book visually farther away where the eye can still focus.
When used as computer glasses, you could see the screen without the glasses, but with the glasses they are shifted farther away visually which helps with eye strain.
I agree that free weights are probably better overall, but would love if that were quantified somehow.