[satvikchoudhary]

Turning brightness down is not recommended. You will experience more vision problems if you do it for long. Decreasing brightness decreases your field of vision, makes it harder for your eyes to focus and will worsen your nearsightedness or increase risk of getting it.

For more context, my eyes became much healthier after I increased the brightness of my monitor to 60% (250nits) since last 4 months. Before then I used to regularly use it at 10% (40nits). My power numbers were getting worse and I even had high IOP, which has improved now.

[lupire]

I've suspected this. Do you have any references?

[satvikchoudhary]

What I wrote was based on my own observations. I tried looking up

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6201904/ This talks about IOP changes on using smart phones. And it increases more when done in low light.

I saw a lot of links for myopia in children and links to light exposure https://www.aao.org/editors-choice/sunlight-exposure-reduces... https://iovs.arvojournals.org/article.aspx?articleid=2705915 These articles are talking about overall exposure - spending time outdoors and find it to be of statistical importance.

https://webvision.med.utah.edu/book/part-viii-psychophysics-... See the section on illumination

"For recognition tasks, visual acuity is greatly affected by the level of background luminance. (Graph)

One theory put forward by Hecht is that within the rod population and within the cone population, there are differing sensitivities which are distributed randomly. Therefore, at high luminance, all cells are active for a high level of visual acuity. At low luminances, only cells sensitive to that level of luminances are active and because they are distributed randomly, the retinal mosaic is coarser thus a lower level of visual acuity is achieved (Graham, 1965).

Another possible explanation is that under limited quantal availability, quantal capture is more probable in the para-central and peripheral retinal due to greater spatial summation. Since photoreceptors density in this area is low, resolution is poorer. As light levels increase, quantal capture occurs more successfully at the central retinal (macula and fovea). A higher level of visual acuity is achieved due to the high photoreceptor density. "

I am not sure what all of these terms mean but I guess some good sources for you to check out. Do share if you find something interesting.