In the case of eye health, this is definitely true.
But no one tells us.
Study this set of posts. Link to them. Copy-paste them for your fridge. Someone you know needs this information!
When we do not get enough sleep, eye health breaks down. Do not let this happen to you.
1. The only time your eyes get a rest or a chance to self-heal at all is when you close them. Open your eyes and they are on the job. Just as never resting would weaken a soldier, so never sleeping could weaken the two guards you call your eyes. A good nightly amount is eight hours. If you cannot get that for some reason (sick children, etc.) then pay more attention to daily resting.
2. You may need a timer for this one, at first. Every time you work for 50 minutes, rest your eyes for ten. This includes computer work, yes, but any reading or crafting is work for your eyes, no matter how fun it is. Give them a break.
3. You know how tired eyes feel to you, When your eyes feel overly tired, try this: lie down and cover your eyelids with cool cucumber slices. Chamomile tea bags, boiled, cooled, and squeezed out, work too. Let the soothing compresses take you away!
Okay, now comes the part we have to say in this lawsuit-happy world: This post is meant to inform and to satisfy curiosity, only, and is not a substitute for medical advice. Consult your doctor for information concerning your conditions. Much effort has been made to assure this information is accurate, however, medical research is always changing the facts, and new findings may supersede currently accepted data. I am NOT a doctor, only quoting several of them.