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Old 03-15-2016, 12:15 PM   #41
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Omnifocal Glasses Could Focus On Whatever You're Looking At Automatically

"An Israeli company called Deep Optics thinks its new high-tech glasses lens can change that. The "omnifocals" have the ability to change their optical power in real time, allowing the wearer to look wherever he or she wants without limiting the field of view or compromising clarity.
The Deep Optics lenses work by incorporating a layer of transparent liquid crystal that can be changed by an electric current. The liquid can adjust the refractive index of the lens—the way it bends light passing through—to effectively change the prescription of the glasses according to the distance of the object your eyes are focusing on".


Some thoughts - you only think your frames are expensive now. These would be so great for working on stuff overhead - like wiring in ceiling lights. Cool idea though.
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Old 03-15-2016, 05:07 PM   #42
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Quote:
Originally Posted by calmloki View Post
Omnifocal Glasses Could Focus On Whatever You're Looking At Automatically

"An Israeli company called Deep Optics thinks its new high-tech glasses lens can change that. The "omnifocals" have the ability to change their optical power in real time, allowing the wearer to look wherever he or she wants without limiting the field of view or compromising clarity.
The Deep Optics lenses work by incorporating a layer of transparent liquid crystal that can be changed by an electric current. The liquid can adjust the refractive index of the lens—the way it bends light passing through—to effectively change the prescription of the glasses according to the distance of the object your eyes are focusing on".


Some thoughts - you only think your frames are expensive now. These would be so great for working on stuff overhead - like wiring in ceiling lights. Cool idea though.
That is cool.

Too bad the power source is a 50 lb back pack.

ETA: Costco is where I go too, no problems in 16 years of going there.
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Old 03-15-2016, 05:29 PM   #43
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Ha-ha, sounds funny, but you'd be surprised how we hoomans vary.

I actually have one ear higher than the other (no, you can't see it; my hair covers my ears). I've also been told that my eyes are different distances from my nose. What all this means is that my glasses have to be made of high enough quality materials, that the temples, nose-pieces, and the little connecting piece between the lenses can survive being bent to accommodate my unique characteristics. One nose-piece is about 1/2 centimeter higher than the other.

(My parents certainly didn't know this. They always bought me the cheapest glasses frames, which totally never fit. Most of the time, I simply went around without my glasses).

Therefore I've never ordered from the online retailers, since I doubt that their materials are equivalent quality to the titanium frames the optician sells. I do know that I break regular sunglasses rather quickly, because of having to bend the frames so they'll stay on my face!

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Originally Posted by Badger View Post
Since both eyes are not always equal distance from your nose wouldn't you also have to know those numbers too?

Cheers!
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Old 03-15-2016, 07:51 PM   #44
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I just had an eye exam and asked for the rx. The rx only lists the measurements for the following for the rt (right eye?) and the lt (left eye?) :

Sphere
Cylinder
Axis

Is this enough to order glasses on line? It's all greek to me.
My last order had an 'ADD' number as well. Not sure what that is. You will also have to measure the distance between your pupils. But that's about it.
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Old 03-15-2016, 07:53 PM   #45
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Add is the amount of extra magnification in the lower (reading) part of bifocals.
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Old 03-15-2016, 09:25 PM   #46
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Therefore I've never ordered from the online retailers, since I doubt that their materials are equivalent quality to the titanium frames the optician sells.
I think you may be underestimating the quality of the frames available online.

While we've been touting the prices on some of the least expensive options, both Zenni and 39dollarglasses offer slightly more expensive titanium frames that are likely made by some the same suppliers your optician uses. Worth a look to price out a pair.
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Old 03-15-2016, 09:27 PM   #47
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I always get transition lenses but keep a pair of "wear-over" sunglasses in the car when the transitions just doing cut it (which is actually quite rare). The wear-overs come in many styles these days.
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Old 03-16-2016, 08:55 AM   #48
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I wrote that two pair of my Zinni frame snapped at the bridge. I did not say it was entirely my fault! I put them in a front pocket of a pair of shorts and when I bent down it bent the frames at a 90 deg angle.
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Old 03-16-2016, 09:53 AM   #49
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I learned about Zenni on this board and several months ago ordered a new pair of no-line bifocals from Zenni. Too short to comment on durability but I see fine and they fit OK. $58 versus local optical shops wanted in mid-$200 range. After surgeries for cataract and torn retina, my eyes do not change much over time, the Zenni replace a twelve year old pair where the bows had deteriorated and my spare pair is even 9 years old.
For the pupillary distance, I had five people independently measure for me following Zenni instructions, they clustered around a certain value so I went with it. Intend to order another pair as a spare
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Old 03-16-2016, 10:08 AM   #50
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i do Costco and have always been very satisfied. Last pair I got lens that darken with UV exposure which is good for outside but won't darken inside the car as UV doesn't penetrate glass. I got frames which have the magnetized clip-on sunglass. These are a nice feature in my mind. Can't really tell that it isn't just a pair of sunglasses as very well integrated into the frame. Great for driving so I just leave them in the car but also good on very bright days as the clip-on is darker.
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Old 03-16-2016, 09:09 PM   #51
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I used 39dollar a few months back and have been very happy. While ordering, they will very often offer deep discounts on multiple pairs when you get close to checkout. Also, I chose the slower shipping (cheaper) which they said 2 weeks or longer. I got them 4 days after I ordered them!

Sent via mobile device. Please excuse any grammatical errors.
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