Sieghard gave helpful information about the three types of glasses. and the price difference, He said:
It's probably the didfferent lenses. Here in Canada there are 3 price points (these are reular prices, currently all 20% off): $459 - transition lenses (the ones which go darker in bright light and are supposed to be pretty much clear indoors $409 - polarized lenses (like regular sunglasses) $369 - plain lenses (they are supposed to filter out some blue light whatever that means, you can have clear or coloured) My response: The filtering out of blue light is for those with enough sight that while using a device with a blue hue, which can interrupt ones sleep cycle, it would filter out that hue to prevent messing up one's sleep cycle. That is also why it is recommended that folks with vision who are using iDevices set the night filter to on, particularly in the evenings/night because that gives it a brownish gue. HTH, Richard, "Reality is the leading cause of stress for those who are in touch with it." - Jane Wagner, from The Search for Signs of Intelligent Life in the Universe. My web site: <https://www.turner42.com> https://www.turner42.com -- The following information is important for all members of the V iPhone list. If you have any questions or concerns about the running of this list, or if you feel that a member's post is inappropriate, please contact the owners or moderators directly rather than posting on the list itself. Your V iPhone list moderator is Mark Taylor. Mark can be reached at: [email protected]. Your list owner is Cara Quinn - you can reach Cara at [email protected] The archives for this list can be searched at: http://www.mail-archive.com/[email protected]/ --- You received this message because you are subscribed to the Google Groups "VIPhone" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/viphone/00f101db4032%2447564460%24d602cd20%24%40comcast.net.
