So, as a child my mom always insisted on me reading with lots of lights turned on. She claimed that reading the dark causes short sightedness and etc.

Now, as an adult, I find that I have my screen's brightness turned up way more than my peers. For example, although it's currently very sunny right now in LA, I have my brightness turned up 100% on my 16" MBP. Though, in the evenings, it's more comfortable at 3 or 4 steps down from 100%.

I can't help but to wonder -- did she condition my eye to be less sensitive to light and have thus slightly ruined my low-light vision?