Patient sees dark spot in polarized lenses...

[OptiChick21]

OK, we are all baffled at our office about this guy...

He originally got SV transitions 1.67 lenses w/ Alize.

He hated them, said they weren't right and were way too thick.

So we were nice and remade them in in SV 160 polarized with Crizal sun instead so he could just keep wearing his older glasses and now have some Rx suns.

He wore them and said outside they are darker in the center and light around the edges!?

The docs looked at them, I took 'em outside and looked through them, the lab managers looked at them, no one could see any color variations. But we remade completely anyway.

He says they are still the same, but took them anyway in a huff.

How can a polarized lens be darker in the center, it's not dyed/tinted??

We used 1.60 because he's always worn that and his Rx is moderately high:

-3.75-0.25 x145
-5.00-1.50 x180

In a Flexon 606, 54 eye size, grooved rimless.

Anyone ever heard of this before??? :hammer:



Thanks.

[Uilleann]

Sounds like his problem is more mental than ocular. You are correct in that polar lenses today commonly use a dyed film set just behind the front surface. The film/density/color should be uniform throughout the lens regardless of material, Rx, base, frame etc. Some Rx's or frame choices may introduce some edge or internal lens reflection in unusual situations, but that should be quite rare. I assume you've used a good quality back side A/R lens with the new polar pair? (Hopefully a good quality A/R was used on the Transitions® pair as well?) As a general rule, we will counsel against grooving polar lenses as we have had the rare instance of de-lamination with grooved frames. But obviously, that isn't this patient's complaint.

The only thing I can guess without seeing the glasses in question as well as speaking to the patient, is that he's seeing some sort of edge reflection that he equates to "lighter around the edges". He needs a good heavy full frame zyl to block out as much light as possible there - or better still...break out the brown/black fingernail polish and have a go at his lens edges. ;) Or better still - go buy him a HUGE cowboy hat and make him wear that everywhere he goes.









...unless he does that already!

[TLG]

There's something strange about this. Why would he start with Transitions (presumably for full time wearing) but when "they weren't right and were way too thick", he switches to a polarized lens? I'm missing something. What wasn't "right" to begin with? I don't see anything in your post that addresses that. And really, a -3.75 in 1.67 was "too thick"? I doubt it. There is nothing wrong with his polarized lenses. You've got another issue, whether it's buyers remorse, sense of distrust or whatever. But now you're totally screwed because any changes made now are viewed under a microscope and you'll never win.

[scriptfiller]

Did someone make the mistake of polishing the edges of the polar pair? That would induce a lightening on the periphery and a perceived darker centre.

I would like to know specifics other than thickness of why the pat said the trans. were not right.

[Striderswife]

A polished edge would make the clear rim of the lenses even clearer. I'd suggest applying an edge tint, especially if he's got a metal frame. As far as the big picture goes, yeah, he may just be looking for a reason not to like them. :S

[Craig]

The docs looked at them, I took 'em outside and looked through them, the lab managers looked at them, no one could see any color variations. But we remade completely anyway.

He says they are still the same, but took them anyway in a huff.

I never make new lenses unless there is a mathmatical reason; this is where it ends up anyway. I need to understand why we are wasting money on thrwoing away good lenses that are made as ordered.
It is not a lens issue, but something else.

Craig

[braheem24]

Give me an engineer anyday, what a waste.