[pct-l] Eyeglass wearers

Sun Jan 24 19:59:18 CST 2010

It take about 30 minutes at the time of 5℃.

2010年1月25日10:57 Yoshihiro Murakami <completewalker at gmail.com>:
> 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 although I may be wrong or just that my information is outdated, that the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/
> ------------------------------------------------------
>

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