[pct-l] Eyeglass wearers

Sun Jan 24 19:57:27 CST 2010

I am sorry. I write wrong content.

The speed of color to thin depend on the temperature.
It is not for one minute at the time of 35℃.
It take about 3 minute at the time of 25℃.
It take about 3 minute at the time of 5℃.

Driving the car is dangerous, because there is a tunnel.

2010/1/25 Yoshihiro Murakami <completewalker at gmail.com>:
> Currently,  the refractive index of the photochromic lens is high (
> 1.67,   we can get light  glasses), and the reaction is fast now.  It
> takes about 1 or 2 minute for the color to dark.  It  become
> completely clear.  But,   Driving the car is dangerous , because it
> takes about ten minutes for the color to thin.
> It is indicated the graph (horizontal axis is seconds,  vertical axis
> is street rate of visible light ray) in
> http://www.vc.hoya.co.jp/lens/option/color_suntech_neo.html
> I cannot found English page.
>
>
> 2010/1/25 Tortoise <Tortoise73 at charter.net>:
>> Yes,  these photochromic lenses are available in the US. have been for
>> years.
>>
>> I wear glasses from when I get up to when I go to bed. It seems to me,
>> although I may be wrong or just that my information is outdated, that the
>> lenses are somewhat slow to change such as when going indoors from bright
>> outdoors, or when driving in the daytime and then going into a tunnel. Also
>> I'm not sure the lenses become completely clear even in low light.  Maybe
>> the technology has improved.
>>
>> Are there some out there with current experience with these? And how well do
>> they combat glare compared to polarized lenses?
>>
>> Tortoise
>>
>> Because truth matters"
>>
>>
>> Yoshihiro Murakami wrote:
>>
>> Isn't there photochromic lens in the United States?  Because I am
>> shortsightedness, one glasses are always necessary.  So I always
>> wearing the photochromic lens, Such as :
>> http://www.vc.hoya.co.jp/lens/option/color_suntech_neo.html (Japansese
>> page)
>>
>> Pros : One glasses OK
>> Cons: Looks like yakuza
>>
>>
>>
>>
>> 2010/1/25 Tortoise <Tortoise73 at charter.net>:
>>
>>
>> I don't know how well these would work, but many optometrists have
>> disposable roll-up sunglasses they give to patients after the patients'
>> eye dilation.
>>
>> I use a pair of fit-over sunglasses and they worked well for me.
>>  WalMart has them, many optometrists also sell higher priced and maybe
>> better sunglasses.
>>
>> Tortoise
>>
>> Because truth matters"
>>
>>
>>
>> John Vishnefske wrote:
>>
>>
>> I did the colorado trail over snow without sun glasses, and I didn't
>> get snowblindness, but things where a tad hazy for 2 days after
>> squinting 8 hours on Georgia pass, CO
>> ya, I know I'm a newbie to this sort of thing. I can't really
>> recommend it. Those rollable things look kinda cool, Tom
>> On Sun, Jan 24, 2010 at 10:31 AM,  <jeff.singewald at comcast.net> wrote:
>>
>>
>>
>> cut glasses out of black paper?  Come on now.  I would bet you would not be
>> able to identify the difference in weight of your pack if you carried two
>> sets of glasses (regular and sun).
>>
>>
>>
>> Unless you are going to test out this black paper solution in conditions
>> similar to what you are going to experience on the PCT, in my opinion it is
>> a bad idea.
>>
>>
>>
>> elevator
>>
>>
>> ----- Original Message -----
>> From: "anna mathys" <haexli333 at gmail.com>
>> To: "Eugene" <atetuna at hotmail.com>
>> Cc: pct-l at backcountry.net
>> Sent: Sunday, January 24, 2010 5:01:13 AM GMT -08:00 US/Canada Pacific
>> Subject: Re: [pct-l] Eyeglass wearers
>>
>> Maybe it's a bad idea, but I was thinking about cut glasses out of black
>> paper. Cut horizontal srtipes out to see trough it. Very cheep and light.
>> People did so (with leather) as an emergency solution in Himalaya.
>> I tried to wear two glasses over each other, but it was unconfortable
>> because mainly the front one slides down.
>> AnnA
>>
>> On Thu, Jan 21, 2010 at 9:42 PM, Eugene <atetuna at hotmail.com> wrote:
>>
>>
>>
>>
>> Got any tips for another semi-blind hiker?
>> I'm thinking about getting a set of prescription transition glasses.  I
>> don't know if they'll be dark enough, nor how I'll block the sides when
>> glare is especially brutal.  I'm also thinking about packing eyeglass wet
>> naps to clean my glasses every few days.
>> _________________________________________________________________
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>
>
>
> --
> Sincerely
> --------------- --------------------------------------
> Hiro    ( Yoshihiro Murakami )
> HP:http://psycho01.edu.u-toyama.ac.jp
> http://picasaweb.google.co.jp/CompleteWalker/
> ------------------------------------------------------
>

-- 
Sincerely
--------------- --------------------------------------
Hiro    ( Yoshihiro Murakami )
HP:http://psycho01.edu.u-toyama.ac.jp
http://picasaweb.google.co.jp/CompleteWalker/
------------------------------------------------------