porkenbeans wrote: Woodruff wrote: porkenbeans wrote: Ffraid wrote:
porkenbeans wrote:... It has been proven that white text over a black background is easier on the eyes, and can actually be read faster and with less eye fatigue than black text on white....
State your source, because I have never found this to be the case. Whenever I have to read text on web pages that use such a format, I always end up going up to the Edit menu and choosing Select All so that, basically, the text and background colors are reversed.
And you have proven what ?
It is similar to when you go into a low light surrounding. Your eyes take a few moments to adjust. What they are in actuality doing is, relaxing the muscles that operate your pupil. when they are relaxed your pupils are fully open. Its these muscles for lack of a better word, that become fatigued when you are reading.
Does this mean that you don't have a source, or just that you're intentionally avoiding the opportunity to provide it?
I do not remember where it was that I learned this. Sorry old chap, just a bit of info that got packed into my brain, somewhere along the line.
wasn't trying to prove anything. You
said, "It has been proven...." I was just asking you to tell me where. I certainly understand that you don't remember where you learned that. I don't remember where I learned most of the crap that's packed into my brain, either. I just don't think you should use statements like "It has been proven" unless you can back it up.
I understand your explanation about the muscles, etc. however, an explanation is not proof. The explanation seems reasonable but, and I don't want to be a wanker here (possibly too late for that), I believe the reason that your eyes take a few moments to adjust to entering a low light surrounding is that a protein called opsin is reattaching itself to a pigment called retinal in the rods of your retina to reform a chemical called rhodopsin, which is essential to night vision. Sources: Chemistry of Vision
, also Biological night vision
. Of course, Wikipedia doesn't count as a real source, since anyone can write whatever they want, but it does give a nice, simple explanation of the process.
[/quote]I did not mean to infer that the pupil opening and closing, is the only thing going on. I was only trying to explain why, and how eye fatigue occurs. The pupil is dilated at its resting state. in order for the pupil to narrow it needs to exert a certain amount of force. If you are staring at a mostly white screen for a prolong amount of time, you may experience "eye strain", or "fatigue". This is because the pupil is working hard to narrow itself, so as to let less light into your eye. This is not really "rocket science". And, simple logic will tell you that the more dilated that your pupils are working the less strain you will encounter.