I'm not interested too much into the discussion. Read at night without environmental light is a bad habit. Smoke is a bad habit too even if your granfather was a smoker and lived a whole century. Yeah, I know, what a poor comparation-
If you want to ditch a bit on human perception I would recommend the book
https://www.springer.com/gp/book/9783319317892.
For more (scientific) knowledge about how the eye work you could read
https://iovs.arvojournals.org/articl...icleid=2164197