Uilleann

Fight the power!!

Cripes sake, Man! Clean those grimey nose pads!

Is that a microwave tint?;)

Interesting. How old is each pair? Yellowing is usually UV damage.

I think someone is trying to fool us here!

Look at the grimy, filthy, weather beaten, *Yellow Trivex* pair. Look at them closely.

Now take a look at the pristine, totally clean, probably never worn, and probably a new set of *POLYCARBONATE* pair.

Apples to apples?
I think not people!


We need a full expose investigation here!

Where is that Chris Hansen Dude at?

Where is Geraldo?

Where is Waldo?

;):cheers::cheers::D

Figured this one out fast!

Looks like you were smoking 2 packs of Pall Mall a day while wearing your Trivex!

Non-filtered of course!

I was thinking Camel non-filters, but after thorough review, I agree 110% with your Pall Mall call.

I tossed around the Canadian Player brand, but figured this kid ain't rolling with the Canadian Eh'holes!

I think that this is 100% Pure American Cigarette smoked yellow tinge we are experiencing!

Agreed: we all know what color nicotine stain looks like on the finger tips and nails and teeth of a heavy smoker. Shoot even the nose pads of their glasses or their plastic frames have that nasty yellow stain on them.

But outside of that we have all seen CR-39 yellow with age..........28 years of the business and in the infancy of polycarbonate I believe I remember them yellowing.....but not anymore. If Trivex is yellowing....now I know why I have not been using it.

Or maybe it was when we UV treated the lenses thay were yellow and that no longers happens.

(oh my....I need to lay off the rum for a while)

Trivex did have this problam when it was first introduced.
It was corrected by the fourth month.

I have only seen this yellowing once. The above picture pales in comparison to my Pt's lens. Pt claimed non-smoker, no chemical exposer, retired TV watcher. Lens were 3yrs. old, I have no idea, but personally 'did not' believe Pt's claims. First time and last time with this Pt.
I do have Pt's complaining of the 'green Coke-Cola bottle' color of Phoenix. Only real issue with one Pt was a man who restores photos. His claim: He could see lens color and it was distorting his work.
Just me 2 cents worth. :-)

Who cares most PT should have an RX change after a year. But still trivex has a better abbi value the poly. and trivex dose not scratch as easy as poly. The pros out weigh the cons. Poly should only be used in safty and kids glasses!!!!!

So do trivex lenses really yellow? Or is this a result of heavy wearing/no cleaning? I have been wearing trivex lenses for about a year now and have noticed no color change. I wear progressive lenses and get plenty of miles in them.

I have never come across a yellowed trivex !!!

I have two pair of drill mounts, one is poly the other trivex, and both are clear after being almost 3 yrs old.
I rarley wear my clear glasses out doors because I always switch to sunglasses so mabye lack of UV exposure explains some difference. Mine were also trilogy and not pheonix.

I also notice zero difference in clarity between the two materials. I would love to see some double blind testing of visual acuities between lens materials. For me poly is fine, and a bit thinner.

I've had trivex lenses since they were first released in Varlux comforts-You'll have to google it to find out how long ago that was. They are as clear today as they were the day they arrived. The "yellowing" which appear on one set closely resemble a pair of fatigued transitions. You didn't edge tint those by any chance did you?

Originally Posted by hcjilson

I've had trivex lenses since they were first released in Varlux comforts-You'll have to google it to find out how long ago that was. They are as clear today as they were the day they arrived. The "yellowing" which appear on one set closely resemble a pair of fatigued transitions. You didn't edge tint those by any chance did you?

You've been had. :hammer: As of now, Varilux doesn't make a trivex comfort in the US. You're either wearing poly Comforts or trivex something else.

As for the yellowing of the lenses... Heavy smoker, definitely. Nasty. Definitely nasty. :shiner:

iv seen it my self with trivex stock lenses isnt as clear as polly they have a slight tint and by time turn a bit yellow

The first incarnation of Trivex seemed to have this problem but I have not seen an issue with Trivex yellowing lately. Also the image does show one old pair and one relatively new pair, the grime on the nose pad as pointed out shows this. This posters seems to be biased towards polycarbonate over Trivex, as an optician I fit both and find myself fitting more polycarbonate I just do becuase it fits more circumstances. I have heard that a 1.60 trivex may be in the works in which case it woud be dubbed by me as the "poly killer". The only downside to Trivex for me to date is the low index of refraction, if and when this improves I will switch to mroe Triex than poly, but would still find a need for a cheap high index so it will never be replaced.

Within two years many Poly rimless jobs show stress cracks so you trade one problem for another, plus I have yet to have a patient complain about yellowing of Trivex lenses while many patients bring in cracked poly lenses (not fit in our optical).

I have been using Trivex for over six years now and have seen only one instance of yellowing. I have completely purged my practice of Poly all together. I surfaced lenses for fifteen years and have always had problems with Poly's lack of clarity in a lensometer and poor scratch resistance. One thing that helped swing me to Trivex was one of my labs changed their policies on "fracturing at the drill holes", Trivex-Lifetime / Poly-90 Days. That was a no brainer. My customer sat. is through the roof, and my scratch return rate is one fourth of what it was with poly. To this day I have not seen a chip, flake or crack in ANY Trivex lens that I dispenced. Poly is still alive because it's cheap and insurance company's love that.