Lipids

mayibfrank · #1 (**permalink**) 11-27-2007, 06:29 PM

I was doing some research into Accuvue Advance contact lenses. I heard that they are prone to something called "lipid deposition." What is that? Is it harmful?

OptixWizard · #2 (**permalink**) 01-15-2008, 11:32 AM

Lipids are waxy compounds found in living cells. They form the outermost layer of moisture on the eye. Since lipids are waxy or oily, they act to keep the eye moist by reducing evaporation. Since contact lenses ride on this lipid layer, some of it is bound to stick to them. This is natural and not harmful, although if these deposits accumulate, the contact lens will be uncomfortable to wear. All you have to do is clean the Acuvue Advance contact or replace it if you've been wearing it for about two weeks and you're good to go.

mayibfrank · #3 (**permalink**) 11-16-2009, 06:05 PM

Quote:

Originally Posted by OptixWizard

Lipids are waxy compounds found in living cells. They form the outermost layer of moisture on the eye. Since lipids are waxy or oily, they act to keep the eye moist by reducing evaporation. Since contact lenses ride on this lipid layer, some of it is bound to stick to them. This is natural and not harmful, although if these deposits accumulate, the contact lens will be uncomfortable to wear. All you have to do is clean the Acuvue Advance contact or replace it if you've been wearing it for about two weeks and you're good to go.

Okay, that's great Optix Wizard. Thank you for taking the time to explain all that.

LeeRoberts · #4 (**permalink**) 11-17-2009, 10:42 AM

Quote:

Originally Posted by OptixWizard

Lipids are waxy compounds found in living cells. They form the outermost layer of moisture on the eye. Since lipids are waxy or oily, they act to keep the eye moist by reducing evaporation. Since contact lenses ride on this lipid layer, some of it is bound to stick to them. This is natural and not harmful, although if these deposits accumulate, the contact lens will be uncomfortable to wear. All you have to do is clean the Acuvue Advance contact or replace it if you've been wearing it for about two weeks and you're good to go.

Thanks for your help, OptixWizard. That was a good explanation of what lipids are and why contact lens wearers should be concerned with them.

mayibfrank · #5 (**permalink**) 11-08-2010, 12:31 PM

Quote:

Originally Posted by OptixWizard

Lipids are waxy compounds found in living cells. They form the outermost layer of moisture on the eye. Since lipids are waxy or oily, they act to keep the eye moist by reducing evaporation. Since contact lenses ride on this lipid layer, some of it is bound to stick to them. This is natural and not harmful, although if these deposits accumulate, the contact lens will be uncomfortable to wear. All you have to do is clean the Acuvue Advance contact or replace it if you've been wearing it for about two weeks and you're good to go.

Does anyone know of a good contact lens cleaner that removes lipids?

LeeRoberts · #6 (**permalink**) 11-22-2010, 05:42 PM

Quote:

Originally Posted by mayibfrank

Does anyone know of a good contact lens cleaner that removes lipids?

I thought I would just go to Google and see what came up under "remove lipids contact lenses." What came up was a lot of stuff like "lipid removal is slightly abrogated by greater lipid adhesion to Bowman's layer."

Finally I found this: CLENS-100®

CLENS-100 works with two exclusive ingredients:

* PEG-11 lauryl ether carboxylic acid . . . a surfactant designed to remove protein, lipids, and debris.
* POLOXAMINE coats and conditions lenses to help guard against future protein buildup.

Extending your lens wearing comfort is as easy as CLENS-100® Lens Drops.

For more information go to http://www.perret-optic.ch/Lentille_de_contact/Prod_entretients/vc_prod_larme/vc_produit_larme_gb.htm

Scroll down until you see "CLENS-100."

mayibfrank · #7 (**permalink**) 12-21-2010, 03:18 PM

Quote:

Originally Posted by LeeRoberts

I thought I would just go to Google and see what came up under "remove lipids contact lenses." What came up was a lot of stuff like "lipid removal is slightly abrogated by greater lipid adhesion to Bowman's layer."

Finally I found this: CLENS-100®

CLENS-100 works with two exclusive ingredients:

* PEG-11 lauryl ether carboxylic acid . . . a surfactant designed to remove protein, lipids, and debris.
* POLOXAMINE coats and conditions lenses to help guard against future protein buildup.

Extending your lens wearing comfort is as easy as CLENS-100® Lens Drops.

For more information go to http://www.perret-optic.ch/Lentille_de_contact/Prod_entretients/vc_prod_larme/vc_produit_larme_gb.htm

Scroll down until you see "CLENS-100."

Thanks for the link, Lee. At least I don't have to know what a "Bowman's layer" is.

Wookiee74 · #8 (**permalink**) 08-15-2011, 11:57 AM

Quote:

Originally Posted by mayibfrank

Thanks for the link, Lee. At least I don't have to know what a "Bowman's layer" is.

The Bowman's membrane (Bowman's layer, anterior limiting lamina, anterior elastic lamina) is a smooth layer in the eye. It is located between the superficial epithelium and the stroma in the cornea. It is composed of strong collagen fibers and helps the cornea maintain its shape. If the Bowman's membrane is damaged, scarring will normally occur.

In adult humans this layer is 8-12 μm thick.

Bowman's layer, which (in mammals) is found only in primates, is absent in cats, dogs, mice, and other carnivores.

The Bowman's membrane is named after Sir William Bowman (1816–1892), an English physician, anatomist and ophthalmologist, who discovered this membrane.

That was a freebie.
http://en.wikipedia.org/wiki/Bowman%27s_membrane

MrsFarrow · #9 (**permalink**) 11-14-2011, 03:11 AM

I have this issue. It's bothersome for sure, but for some reason the Oasys give me headaches

I use Clear Care every night and that seems to take care of it!

oingoboingo · #10 (**permalink**) 11-14-2011, 10:10 AM

Quote:

Originally Posted by Wookiee74

The Bowman's membrane (Bowman's layer, anterior limiting lamina, anterior elastic lamina) is a smooth layer in the eye. It is located between the superficial epithelium and the stroma in the cornea. It is composed of strong collagen fibers and helps the cornea maintain its shape. If the Bowman's membrane is damaged, scarring will normally occur.

In adult humans this layer is 8-12 μm thick.

Bowman's layer, which (in mammals) is found only in primates, is absent in cats, dogs, mice, and other carnivores.

The Bowman's membrane is named after Sir William Bowman (1816–1892), an English physician, anatomist and ophthalmologist, who discovered this membrane.

That was a freebie.
http://en.wikipedia.org/wiki/Bowman%27s_membrane

Thank you, Wookiee. I just found it interesting that the article mentioned that this "Bowman's layer" is "found only in primates" but is "absent in cats, dogs, mice and other carnivores." Couldn't they just have stopped at "found only in primates"?

mayibfrank · #11 (**permalink**) 11-16-2011, 05:22 PM

Quote:

Originally Posted by oingoboingo

Thank you, Wookiee. I just found it interesting that the article mentioned that this "Bowman's layer" is "found only in primates" but is "absent in cats, dogs, mice and other carnivores." Couldn't they just have stopped at "found only in primates"?

Yeah well, you know those academic types . . . .

LeeRoberts · #12 (**permalink**) 01-04-2012, 04:27 PM

Quote:

Originally Posted by oingoboingo

Thank you, Wookiee. I just found it interesting that the article mentioned that this "Bowman's layer" is "found only in primates" but is "absent in cats, dogs, mice and other carnivores." Couldn't they just have stopped at "found only in primates"?

Yes I suppose they should have stopped there. If this "Bowaman's layer" is found only in primates, we can guess where they're not found.

Wookiee74 · #13 (**permalink**) 01-11-2012, 04:44 PM

Quote:

Originally Posted by oingoboingo

Thank you, Wookiee. I just found it interesting that the article mentioned that this "Bowman's layer" is "found only in primates" but is "absent in cats, dogs, mice and other carnivores." Couldn't they just have stopped at "found only in primates"?

I think you're right. It's like saying "I wear Acuvue Advance contact lenses, but I don't wear Boston Equalens, Focus Night & Day, PureVision, Vantage Thin Visitint or Focus Night & Day."

mayibfrank · #14 (**permalink**) 02-10-2012, 11:46 AM

Quote:

Originally Posted by Wookiee74

The Bowman's membrane (Bowman's layer, anterior limiting lamina, anterior elastic lamina) is a smooth layer in the eye. It is located between the superficial epithelium and the stroma in the cornea. It is composed of strong collagen fibers and helps the cornea maintain its shape. If the Bowman's membrane is damaged, scarring will normally occur.

In adult humans this layer is 8-12 μm thick.

Bowman's layer, which (in mammals) is found only in primates, is absent in cats, dogs, mice, and other carnivores.

The Bowman's membrane is named after Sir William Bowman (1816–1892), an English physician, anatomist and ophthalmologist, who discovered this membrane.

That was a freebie.
http://en.wikipedia.org/wiki/Bowman%27s_membrane

You can always count on a Wookiee to have your back.