So now you have a pretty great excuse to continue reading that awesome book, even when the sun goes down! And I can't wait to tell that to my mom - she always annoyed me to stop reading when light was low.
But before you go to you bookshelf and turn the lights off, know this: reading in the dark won't necessarily cause you to have ametropies (such as myopia, hyperopia and astigmatism), but it can give you a headache because of the effort your eyes will make. If you think it'll be worth it, go ahead! But, just in case, it's nice to have a directional light source - it can be a flashlight, a lamp or even one of those cool little lamps you can attach to your book pages! - to increase the contrast between the words and the paper, preventing eye fatigue.
But before you go to you bookshelf and turn the lights off, know this: reading in the dark won't necessarily cause you to have ametropies (such as myopia, hyperopia and astigmatism), but it can give you a headache because of the effort your eyes will make. If you think it'll be worth it, go ahead! But, just in case, it's nice to have a directional light source - it can be a flashlight, a lamp or even one of those cool little lamps you can attach to your book pages! - to increase the contrast between the words and the paper, preventing eye fatigue.
~Ally