<i>Children need to spend around three hours per day under light levels of at least 10,000 lux to be protected against myopia. This is about the level experienced by someone under a shady tree, wearing sunglasses, on a bright summer day. (An overcast day can provide less than 10,000 lux and a well-lit office or classroom is usually no more than 500 lux.)</i><p>Here were I live, we do not get almost any direct sunlight from October till March - sun is just too low and it is cloudy most of the time.<p>Another problem is the light levels in the offices that are not optimized for the good sight but for the least allowed energy consumption.
I decreased my short sightedness by 50%, from -4 to -2 by following some principles and doing natural exercises. I wrote an article about it, have a read: <a href="https://medium.com/@faiz/why-spectacles-is-a-bad-idea-66078a52626c#.yspu839zu" rel="nofollow">https://medium.com/@faiz/why-spectacles-is-a-bad-idea-66078a...</a><p>"The fact is that the eyes contain muscles, are surrounded by muscles, and are embedded in adipose tissue, hence it seems inevitable that positive changes will take place in their shape and structure as a result of the forces exerted upon them by eye exercises, just as physical exercises can improve the shape and structure of the body ."
Seems like it's a classic case of "use it or lose it".<p>Not just with vision, but if you sit around all day you lose muscle, change fields of work and you may forget what you learned in school. Once you're inside, I can definitely see your eyes being affected by the difference in like as well as the fact that there probably aren't any objects more than 15 feet away for from you if you're at home since you're bounded by walls so there's no reason for you to be able to see further. This only gets made worse when staring into a screen that's anywhere from 6 inches to 2 get from our eyes.<p>Our bodies do a great job at optimizing. If for years in ends you're spending a majority of your time looking at objects that close, your body will adapt to it. Unfortunately, the byproduct of this seems so be the inability to see further distances.
Atropin to the rescue!<p>Nearsightedness Progression in Children Slowed Down by Medicated Eye Drops:
<a href="http://www.aao.org/newsroom/news-releases/detail/nearsightedness-progression-in-children-slowed-dow" rel="nofollow">http://www.aao.org/newsroom/news-releases/detail/nearsighted...</a>
From a layman's point of view I am struggling to understand how come we have not pinpointed the cause yet - there are so many various groups of children all over the world to draw correlations from. Obviously I am wrong, what I am failing to see?
Previously discussed with 101 comments in March:
<a href="https://news.ycombinator.com/item?id=9227541" rel="nofollow">https://news.ycombinator.com/item?id=9227541</a>
I wonder if the way our cities are also affects how much time children spend outside: dirty air, dangerous traffic, the fact that a greater part lives in cities not near nature on the countryside
I'd love to do my computing outdoors.<p>My optician offered an explanation that the elastic material in my eye's lens has probably hardened from prolonged engagement in 'near work'. Hence myopia.<p>However, I don't see (ahem) how going outside and doing the exact same thing would improve matters. It would probably be better to have a change of focus target distance.<p>Therefore I wonder will they have to reconsider their conclusion if more data becomes available - e.g. pixel-qi type screens gain commercial success.<p>Also, matte screens have gone completely out of fashion which is a shame.<p><a href="http://liliputing.com/2015/01/pixel-qi-dead-low-power-displays-not.html" rel="nofollow">http://liliputing.com/2015/01/pixel-qi-dead-low-power-displa...</a><p>Do outdoor readers suffer the same myopia, as inert indoorsy readers? I would imagine so.
i'm myopic
when i drive i use -4
when i use netbook i use -2 (yes, text still look sharp)
while reading using phone, i use 4 (google plus lens therapy)<p>some observations:
i can use -2 during daylight riding motorcycle, at night, it's blurry and i have to use -4 to have clear vision ... so, sunlight can help myopia by 2 diopters
as screen brightness increases, the farther i can move my android facing me while retaining same level of clarity
you don't have to use the same diopter whole day (like wearing contacts). you can use different diopter based on your need.