Transitions fogging up when moving from cool to warm

**rsandr** · 10-28-2005, 01:06 PM

I have a friend who's transitions fog up when he gets out of his air conditioned car in Florida, the things some folk have to contend with eh?

Is there a fix for this, will super scratch guard cure it?

Rick

**shellrob** · 10-28-2005, 02:32 PM

There's a cleaner out there called fog buster that helps a bit. I give it to the athletes that have this problem. Also, I always suggest they turn down the air conditioner a bit before they get our of the car so there's not such a drastic switch from cold to hot. Seems to work.

**spartus** · 10-28-2005, 10:19 PM

When I lived in Missouri, I could tell when summer and winter began by my sunglasses. If they fogged up when I walked outside, it was officially summer. If they did it when I walked inside (before taking them off, of course), it was officially winter.

It's just the humidity. Turning down the air would probably help. Not blasting it in his face (if he is) would probably also do a bit for it.

**eromitlab** · 10-28-2005, 10:25 PM

not much can be done... it's just the nature of materials, when a cold material meets warm air, any moisture present in the air is going to condense on the material. I don't know of anything that can really prevent it from happening... kind of like gravity.

**rsandr** · 10-29-2005, 04:25 AM

Originally Posted by eromitlab

not much can be done... it's just the nature of materials, when a cold material meets warm air, any moisture present in the air is going to condense on the material. I don't know of anything that can really prevent it from happening... kind of like gravity.

He didnt seem to get this with his Sunsensors.
I guess it is just differences in the material.

**Chris Ryser** · 10-29-2005, 04:49 AM

Originally Posted by rsandr

I have a friend who's transitions fog up when he gets out of his air conditioned car in Florida, the things some folk have to contend with eh?

Is there a fix for this, will super scratch guard cure it?

Rick

This is a normal occurence when moving glasses from cold to warm, even more so when the air is humid. Same thing occurs when skiing up north and then enter a heated house. Makes no difference what brand or make of lenses.

Apply a good antifog-antistat product..................not a lens cleaner with antifog additions....................for full protection against fogging up

Apply it properly...........make sure it is on the lens.................test it by by putting lenses into freezer for 30-40 seconds, then remove into normal temperatures. If lens stay's clear you got a good and working product.

There are a few good product available that will do the trick.

**Chris Ryser** · 10-29-2005, 10:00 AM

By the way, I forgot on above posting to mention that hydrophilic coatings (anti-fog) are non permanent and teh application has to be repeated whenever the lenses have been cleaned wet.

There are some permanent coatings coming on the market but the theory on this item does not allow for permanency and the coatings I have seen (made in Japan) have stopped protecting after 6 month.

**rsandr** · 10-29-2005, 04:33 PM

Originally Posted by Chris Ryser

Apply a good antifog-antistat product..................not a lens cleaner with antifog additions....................for full protection against fogging up

Can you recommend one?
Does your company do one?

Rick

**QDO1** · 10-29-2005, 04:36 PM

Originally Posted by rsandr

Can you recommend one?
Rick

if the lens is uncoated or just hardcoated smearing a drip of washing up liquid on it, and polising untill it doesnt show any more is as good as it gets! In the UK Calotherm is pretty good, but is a bit to smeary on AR coats for my taste

**Mikef** · 10-29-2005, 06:17 PM

I used to use and anti-fog on my sunglasses but you had to put it one just about every day.

Just blow on them or wave them around a couple second and the fog goes away!

When I ski I never take my gogles off because as soon as you put them back on they fog up.

**Chris Ryser** · 10-30-2005, 05:04 AM

Originally Posted by QDO1

In the UK Calotherm is pretty good, but is a bit to smeary on AR coats for my taste

In North America people use dishwashers and there is no UK Calotherm to smear on AR coated lenses and making streaks.

Are you selling re-packaged Calotherm in you store as an add on service, or do you tell your patients to by finished reading glasses at the UK pharmacy.

Similar to you selling different progressives there are some good chemical products available that do NOT streak AR coated lenses and which you can sell, make some money, have a happy customer and do not promote caveman's soap.

**QDO1** · 10-30-2005, 10:00 AM

Calotherm is a specialist lens cleaner

**chip anderson** · 10-30-2005, 10:11 AM

Try Permabrite cleaner (Danker Labs) it's mostly EDTA and does an excellent job of anti-fog. Also probably the best cleaner for spectacles, rigid bifocal contact lenses, an HGP contact lenses.

Chip

**Chris Ryser** · 10-30-2005, 10:17 AM

Originally Posted by QDO1

Calotherm is a specialist lens cleaner

My apology for not knowing the UK market............................

However if it smears AR coated lenses it is obviously not right for such lenses, and something else would be indicated for that market.