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InvisibleZen Peddler
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Registered: 06/18/01
Posts: 6,379
Loc: orbit
Re: Eye floaters - a wive's tale? [Re: valour]
    #2362212 - 02/21/04 12:44 AM (20 years, 2 hours ago)

exactly - these are natural proteins in the vitreous of the eye - that certain medical conditions can increase in prevelence - your eyes natural mechanisms eventually move these out of your vision.


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Offlinekb73
enthusiast
Registered: 10/18/01
Posts: 369
Loc: Abilene, TX
Last seen: 13 years, 4 months
Re: Eye floaters - a wive's tale? [Re: Zen Peddler]
    #2362278 - 02/21/04 01:01 AM (20 years, 2 hours ago)

http://www.straightdope.com/classics/a2_311.html

What are those threads that float in your field of vision?

Dear Cecil:

Sometimes when I'm lying on my back looking at the sky or the ceiling or some other light-colored background, I swear I can see specks and what looks like little threads floating by. They seem to move when I move my eyes, leading me to believe they're actually on my eyes. Is there some optical phenomenon that allows us to focus that close? Is there a name for this effect? --Mike P., Dallas

Dear Mike:

Those little specks and threads aren't on your eyes, you silly, they're IN your eyes. Doctors call them floaters, muscae volitantes (Latin for "fluttering flies"), or, if they're in a prosaic mood, spots. The specks are variously described as particles, soot, spiders, cobwebs, worms, dark streaks, or rings. Just about everybody experiences them, although they're most common in people who are nearsighted. Usually--but not always--they're harmless.

The little threads are believed to be the sad remnants of the hyaloid artery, which nourishes the lens and other parts of the eye during fetal development and then withers away. During its brief life the artery floats in the vitreous humor, the goo that fills the eyeball behind the lens. Running from the lens to the back of the eye where the optic nerve comes in, it reaches the high point of its existence around the third month of development, then starts to atrophy. By the seventh month blood stops flowing through the artery and it gradually disintegrates. Most of the debris disappears by the time you're born, but some of it remains on the scene indefinitely.

As you get older, the number of floaters in your eyes tends to increase due to the formation of fibrous clumps and membranes in the vitreous fluid. If things really start to slide, the vitreous material may even pull away from the inside of the eyeball, in which case what you're seeing may be crudniks stuck to the back side of your eyeball jelly. Disgusting, sure, but more or less normal, they tell me. Your vision remains unimpaired.

But floaters aren't always benign. Sometimes they're errant blood cells resulting from hemorrhage of the delicate vessels inside the eye. This can be caused by a good whack to the head or by a variety of ailments. A sudden shower of spots, for instance, often accompanied by flashes of light, can signal that you're about to suffer a detached retina.

Floaters can also be debris resulting from an eye infection--or worse. I note here in my ophthalmology handbook, which needless to say I keep with me always, that sometimes floaters can be "intraocular parasites"--meaning that what look like flies may actually be flies, after a manner of speaking. Fortunately, these are rare.

Assuming your floaters aren't caused by some ongoing disease or other problem, they'll generally go away or at least settle out of your line of vision eventually. If not, and if your sight is seriously impaired as a result, the vitreous fluid can be surgically drained and replaced with an inert substitute. This is called a vitrectomy, and it's a bit delicate. If you're checking out surgeons and the guy says, "Sure, I'll take a stab," he is not, in my book, the ideal candidate for the job.

--CECIL ADAMS


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WARNING chronicshroom will rip you off! Don't trade with him! I sent him 20 spore syringes and he never sent me anything.


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InvisibleZen Peddler
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Registered: 06/18/01
Posts: 6,379
Loc: orbit
Re: Eye floaters - a wive's tale? [Re: kb73]
    #2362392 - 02/21/04 01:28 AM (20 years, 1 hour ago)

thanks for your post. highly informative.


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Invisiblemjshroomer
Sage
Registered: 07/21/99
Posts: 13,774
Loc: gone with my shrooms
Re: Eye floaters - a wive's tale? [Re: valour]
    #2363150 - 02/21/04 09:55 AM (19 years, 11 months ago)

Valour, now that is interesting since when I do shrooms or LSD I take no notice of my floaters, and at 60 I have a lot of them. A;lso have cataracs. Have to get rid of those soon via laser.

But the floaters, I never notice them when I am high, only when I am not.

Too many other items to see when stoned.

mj


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OfflineDoktarDemento
Alien WitchDoctor

Registered: 02/05/04
Posts: 36
Loc: Around Earth
Last seen: 16 years, 6 months
Re: Eye floaters - a wive's tale? [Re: Monkah]
    #2368851 - 02/22/04 05:37 PM (19 years, 11 months ago)

They are as I recall, blood vessels which have long since ceased functioning(like in babyhood!) and kind of broke off. It has been a while since I read about them, I think they are related to development of the eye, and after a point, after birth, i believe, they are no longer used, and fall apart.


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ooh eeh ah ah ah ting tang walla balla bing bang ooh ah


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InvisibleRipple
Ripple
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Folding@home Statistics
Registered: 05/16/02
Posts: 21,014
Loc: the timbers of Fennario
Re: Eye floaters - a wive's tale? [Re: valour]
    #2372075 - 02/23/04 01:16 PM (19 years, 11 months ago)

mine seem to have gotten worse as i've become older.


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The bus came by and I got on that's when it all began!



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OfflineFesterBestertester
journeyman
Registered: 02/23/04
Posts: 57
Last seen: 19 years, 11 months
Re: Eye floaters - a wive's tale? [Re: Ripple]
    #2375641 - 02/25/04 08:38 AM (19 years, 11 months ago)

I've had these also since I was a kid. Mine look like sperm, they actually swim and dart about in all directions, some travel in zig-zags.
Why all of a sudden did I remember to roll a doobie?


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Offlinellama
Stranger
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Registered: 02/23/04
Posts: 36
Loc: none of this is real
Last seen: 17 years, 10 months
Re: Eye floaters - a wive's tale? [Re: Zen Peddler]
    #2375691 - 02/25/04 09:21 AM (19 years, 11 months ago)

yeah its cells in the vitreous jelly of the eye i don't think the cause is LSD herb or any other drug!!!! i have had several in my right eye due to the vitreous jelly shrinking away from the retina.. it helps if you drink plenty of water!!!!!!!!!


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