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All right. What you don't want to do is increase artificial light intensity. A big part of the issue is the light spectrum and distribution of it. There is a
by hnsighty 12y ago
All right. What you don't want to do is increase artificial light intensity. A big part of the issue is the light spectrum and distribution of it. There is a pretty easy way to test / verify this, if you have an eye chart handy. Compare your acuity in outdoor, shaded light, to a solely fluorescent lit environment. Once you get to where you can barely make out the line, note the difference in acuity natural vs. artificial light.
Also, the minus lens creates focal plane stimulus inside the eye that prompts axial elongation. Lots of studies on this subject, it's basically uncontested. What you really don't want to be doing is wear a lens that gives you sharp distance vision, while working up close. You want to have a specific reduced prescription for close-up, that just gives you correction to the distance you need.
Breaks, also. Initial myopia is a ciliary (focusing muscle) spasm. Lots of studies there too, look for pseudo myopia or NITM (near induced transient myopia). Part of your current deficiency is ciliary, part is axial elongation. Take an hour break every three hours. Get outside. Focus at a distance. Your ciliary muscle isn't meant to be all tensed up (close-up use) all day.
For more on the subject, take a look at www.frauenfeldclinic.com, those guys are fairly awesome.
- jychang 12y ago> Compare your acuity in outdoor, shaded light, to a solely fluorescent lit environment The amount of light in the shade outdoors, or on an overcast day, is around 12 EV [1]. A bright indoors office with fluorescent lights is around 8EV. This means that the human eye will be receiving 16 times more light in the outdoor shade, compared to even a bright indoors room. That's a big difference that has nothing to do with the source of the light. Common sense also dictates that fluorescent lights did not get popular in homes until the last 10 years due to the rise of CFLs, and yet kids grown up in the 1970s have increased myopia rates- the source of the myopia therefore cannot be due to the indoor lights. [1] http://en.wikipedia.org/wiki/Exposure_value http://en.wikipedia.org/wiki/Exposure_value