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Topic: Vitreous humour


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In the News (Tue 2 Dec 08)

  
  NationMaster - Encyclopedia: Vitreous humour   (Site not responding. Last check: 2007-10-26)
The aqueous humour is the clear, watery fluid that fills the complex space in the front of the eye which is bounded at the front by the cornea and at the rear by the front surface or face of the vitreous humour.
Vitreous humour is the clear gel that fills the eyeball, lying between the lens and the retina in the eye.
Vitreous humour is the clear substance that fills the part of the eyeball lying between the lens and the retina.
www.nationmaster.com /encyclopedia/Vitreous-humour   (1017 words)

  
 Spartanburg SC | GoUpstate.com | Spartanburg Herald-Journal
The vitreous humour (British spelling) or vitreous humor (U.S. spelling) is the clear gel that fills the space between the lens and the retina of the eyeball of humans and other vertebrates.
The vitreous is also believed to function as a barrier to the forward diffusion of oxygen from the retinal blood supply to the anterior segment of the eye, where it can cause oxidation damage to the lens.
Since the vitreous does not regenerate after being removed from the eye (a procedure known as vitrectomy, which is usually performed to allow surgical access to the posterior segment of the eye), early cataract is a frequent complication of retinal surgery.
www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=Vitreous_humour   (379 words)

  
 eMedicine - Hemorrhage, Vitreous : Article by Brian A Phillpotts, MD
The vitreous body is bounded posterolaterally by the internal limiting membrane of the retina, anterolaterally by the nonpigmented epithelium of the ciliary body, and anteriorly by the lens zonular fibers and posterior lens capsule.
The vitreous hemorrhage-induced glaucoma is secondary to the blockade of the trabecular meshwork by formed ghost cells due to long-standing blood cells in the vitreous.
Similarly, vitreous hemorrhage within the space between the internal limiting and the nerve fiber layer may resemble that within the retrohyaloid space, except that the blood does not shift with change in the head position as may be the case with subhyaloid hemorrhage.
www.emedicine.com /oph/topic421.htm   (3388 words)

  
 Vitreous humour - Wikipedia, the free encyclopedia
Vitreous humour is the clear substance that fills the part of the eyeball lying between the lens and the retina.
It is 99.98% water, and the water and salts within the vitreous are in constant exchange with the aqueous.
The collagen fibres of the vitreous are held apart by electrical charge.
www.wikipedia.org /wiki/Vitrectomy   (242 words)

  
 ScienceDaily: Vitreous humour   (Site not responding. Last check: 2007-10-26)
Vitreous humour (British spelling) or Vitreous humor (US spelling) is the clear aqueous solution that fills the space between the lens and the retina of the vertebrate eyeball.
Vitreous humour -- Vitreous humour (British spelling) or Vitreous humor (US spelling) is the clear aqueous solution that fills the space between the lens and the retina of the vertebrate eyeball.
Aqueous humour -- The aqueous humour is the clear, watery fluid that fills the complex space in the front of the eye which is bounded at the front by the cornea and at the rear by the front surface or face of the...
www.sciencedaily.com /encyclopedia/Vitreous_humour   (1508 words)

  
 The Vitreous Humor
The vitreous humor is a clear gel which occupies the posterior compartment of the eye, located between the crystalline lens and the retina and occupying about 80% of the volume of the eyeball.
The flashes of light occur as the vitreous tugs on the sensory layer of the retina as the vitreous is detaching.
As a posterior vitreous detachment (PVD) occurs—that is, as the vitreous fluid separates from the retina—organic debris or particles known as “floaters” are released.
www.tedmontgomery.com /the_eye/vitreous.html   (854 words)

  
 Vitreous - Wikipedia, the free encyclopedia
Vitreous refers to a material in a glassy state.
However, they still exhibit short-range order -- the separation of atoms and/or the lengths of covalent bonds are very close to their typical equilibrium distances.
In Ophthalmology, the inner part of the eye which is made up of a clear jelly-like fluid is known as vitreous humour.
en.wikipedia.org /wiki/Vitreous   (120 words)

  
 New Research Set To Restore Lost Sight For People With Diabetes
People with diabetes commonly experience blindness, or a reduction in sight, when a lack of oxygen at the back of the eye causes tiny blood vessels to overgrow into the vitreous humour, which is a jelly like substance.
She says: "I am currently making a gel that imitates the vitreous humour and which is non-cytotoxic to the human eye.
The vitreous humour is a clear gel-like substance that fills the space between the lens and the retina of the eye.
www.medicalnewstoday.com /medicalnews.php?newsid=51385&nfid=crss   (402 words)

  
 Use of vitreous humour of the eye for HIV antibody tests of medicolegal autopsies.
Use of vitreous humour of the eye for HIV antibody tests of medicolegal autopsies.
Sera, vitreous humour and gall bladder fluid were collected from a HIV positive case and the results compared to negative cases.
RESULTS: Vitreous humour gave a positive result in both EIA tests, although the signal was weaker than for sera.
www.aegis.org /aidsline/1990/sep/M9093692.html   (435 words)

  
 The Lens and Vitreous Body
The vitreous body forms in the cavity of the optic cup in the space between the lens and the retina.
The primary vitreous humor, as it is called, is then surrounded by a jelly-like secondary vitreous humour.
The transparent vitreous body is surrounded by the hyaloid membrane.
www.vision.ca /eye/lens_vitreous.html   (318 words)

  
 Eye (vitreous) floaters in vision - cause, cure & treatment
The vitreous humour thickens and clumps as we age, and floaters result from the clumped vitreous gel.
Vitreous detachment is also common in diabetics, but the highest rate of complaints of floaters is in people over the age of 70.
This is when the prevalence of a vitreous detachment jumps from 10% of the population to 63%.
www.naturaleyecare.com /diseases.asp?d_num=6   (898 words)

  
 All About the Eyes
Within the cavities enclosed by the three layers of the globe described above there are the aqueous humour in the anterior and posterior chambers; the crystalline lens behind the iris; and the vitreous body, which fills the large cavity behind the lens and iris (See figure to left).
The aqueous humour is a clear colourless fluid with a chemical composition rather similar to that of blood plasma (the blood exclusive of its cells) but lacking the high protein content of the latter.
The wall of the canal that faces the aqueous humour is very delicate and allows the fluid to percolate through by virtue of the relatively high pressure of the fluid within the eye.
www.becomehealthynow.com /article/bodyeyes/772/7   (646 words)

  
 Autobiography - Slicing up eyeballs, I want you to know   (Site not responding. Last check: 2007-10-26)
The vitreous humour is, I think, the name of the fluid in the back part of the eyeball.
Yep, vitreous humour and aqueous humour are the two fluid areas in the eye.
I know what vitreous humour is, which is why I mentioned it in the entry.
www.burninglibrary.com /archives/002831.html   (964 words)

  
 NFI søk: litteratur: Vitreous humour hypoxanthine levels in SIDS and other causes of death in infancy.   (Site not responding. Last check: 2007-10-26)
NFI søk: litteratur: Vitreous humour hypoxanthine levels in SIDS and other causes of death in infancy.
Vitreous humour hypoxanthine levels in SIDS and other causes of death in infancy.
Torleiv Ole Rognum, et al.: Vitreous humour hypoxanthine levels in SIDS and other causes of death in infancy.
www.nsd.uib.no /nfi/litteratur/?key=314537   (92 words)

  
 IvyRose Holistic : Nervous System : Visual Perception : The Eye : Vitreous Humour
The Vitreous Humour (also known as the Vitreous Body) is located in the the large area that occupies approx.
The vitreous humour is a perfectly transparent thin-jelly-like substance that fills the chamber behind the lens of the eye - click for diagram.
There is a canal called the canal of Stilling running through the centre of the vitreous humour from the entrance of the optic nerve to the posterior surface of the lens.
www.ivy-rose.co.uk /References/glossary_entry450.htm   (235 words)

  
 Vitreous humour -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-26)
Vitreous humour -- Facts, Info, and Encyclopedia article
(An object that floats or is capable of floating) Floaters are small, generally harmless, defects in the vitreous humour.
Vitrectomy is generally not indicated unless sight has already been severely affected, as the operation itself can cause (Lack of sight) blindness.
www.absoluteastronomy.com /encyclopedia/V/Vi/Vitreous_humour.htm   (80 words)

  
 Free amino acid content of the vitreous humour in cot deaths -- Patrick and Logan 63 (6): 660 -- Archives of Disease in ...
Free amino acid content of the vitreous humour in cot deaths -- Patrick and Logan 63 (6): 660 -- Archives of Disease in Childhood
Free amino acid content of the vitreous humour in cot deaths
The concentration of 27 amino acids in the vitreous humour was analysed in
adc.bmjjournals.com /cgi/content/abstract/63/6/660   (131 words)

  
 Part Three Chapter One
And if such a power...is in the centre of the crystalline humour it takes the species with their surface and they are referred from the surface of the cornea (luce) where the objects are mirrored...or they are reflected from the surface of the uvea which is boundary and container of the albugineous humour /i.e.
the vitreous body/, which has opacity behind the...transparency of the albugineous humour, as when the capacity of lead is placed behind the transparency of glass in order that things can be better mirrored at the surface of such glass.
In the early notes the role played by the vitreous humour in the visual process is neither discussed nor illustrated.
www.sumscorp.com /books/contin/p3c1.htm   (15198 words)

  
 Vitreous humour   (Site not responding. Last check: 2007-10-26)
Where the vitreous humour has become cloudy, vitrectomy is surgery to restore sight in which the surgeonremoves cloudy vitreous humor in the eye and replaces it with a salt solution.
Vitrectomy is generally not indicated unless sighthas already been severely affected, as the operation itself can cause blindness.
Retina - Cornea - Iris - Pupil - Lens - Macula - Sclera - Optic fovea - Blind spot - Vitreous humour - Aqueous humour - Choroid - Ciliary body - Conjuctiva - Angle structure - Tapetum lucidum
www.therfcc.org /vitreous-humour-39938.html   (146 words)

  
 The Vitreous Humour   (Site not responding. Last check: 2007-10-26)
The vitreous humour is a gel-like substance behind the lens.
It helps the eye to maintain its shape, and light passes through it on its way to the retina.
If the retina is partially detached, vitreous fluid can also get behind the retina and cause the detachment to become worse.
www.growingstrong.org /blindness/eyes/blvitreous.htm   (79 words)

  
 A.Word.A.Day -- vitreous
The vitreous humor, or vitreous, is the glassy clear sticky material within the eye.
During some types of retinal surgery, the vitreous is removed (a vitrectomy) and replaced with saline solution, with seemingly no ill effect in most cases.
"Vitreous" also means "glassy" in a non-medical sense, from which we get vitrine, vitriol, vitriolic, and vitrescent.
www.wordsmith.org /words/vitreous.html   (237 words)

  
 Learn more about Vitreous humour in the online encyclopedia.   (Site not responding. Last check: 2007-10-26)
Learn more about Vitreous humour in the online encyclopedia.
Hint: Play with putting spaces before and after your words to see the different results you get.
Vitreous humour is the clear gel that fills the eyeball, lying behind the eye's lens and in front of the retina.
www.onlineencyclopedia.org /v/vi/vitreous_humour.html   (180 words)

  
 Vitreous humour - Encyclopedia, History, Geography and Biography   (Site not responding. Last check: 2007-10-26)
Vitreous humour - Encyclopedia, History, Geography and Biography
This page was last modified 14:54, 30 May 2005.
The article about Vitreous humour contains information related to Vitreous humour.
www.arikah.net /encyclopedia/Vitreous_humor   (193 words)

  
 Eye Article, Eye Information   (Site not responding. Last check: 2007-10-26)
In most vertebrates and some mollusks the eye works by projecting images onto a light-sensitive retina, where the light is detected and transmitted to the brain via the optic nerve.
The eye is typically roughly spherical, filled with a transparent gel-like substance called the vitreous humour, with a focusing lens and often a muscle called the iris thatcontrols how much light enters.
There areother refraction errors arising from the shape of the cornea andlens, and from the length of the eyeball.
www.anoca.org /light/lens/eye.html   (394 words)

  
 Persistent hyperplastic primary vitreous humour   (Site not responding. Last check: 2007-10-26)
congenital lesion of the eye consisting of persistence of the primary vascularized vitreous humour that normally should undergo involution by the sixth embryonic month.
Differentiation from retinoblastoma is made on CT by the absence of calcification and by the presence of a hypoplastic globe on the affected eye.
On MR imaging a persistent hyaloid canal and hyperintense fluidfluid levels on T1-weighted images reflecting haemorrhage within the vitreal chamber as well as hyperintense subretinal fluid caused by retinal detachment can be seen, confirming the diagnosis.
www.amershamhealth.com /medcyclopaedia/medical/volume%20VI%201/PERSISTENT%20HYPERPLASTIC%20PRIMARY%20VITREOUS%20HUMOUR.ASP   (130 words)

  
 Uveitis, vitreous humour, and klebsiella. II. Cross-reactivity studies with radioimmunoassay -- Welsh et al. 65 (5): ...
Radioimmunoassay with calf and cow vitreous humour-I125 and rabbit
immunological cross-reactivity of vitreous humour with bacterial and
fo 10 000 micrograms/ml was found to inhibit the binding of vitreous humour
www.bjophthalmol.com /cgi/content/abstract/65/5/323   (151 words)

  
 SCIENCE 08 BIOLOGYNotebook Page E
Behind the vitreous humour locate the extension of the choroid coat that forms the iris and also locate the round opaque ball-shaped lens.
Note the liquid aqueous humour found between lens and the cornea.
Answer the two questions in the original problem in a brief paragraph that clearly explains how the eye functions to enable us to see.
geocities.com /gwdisney/Bi08eyestrxr.html   (1167 words)

  
 Regulation of cell growth by vitreous humour -- Lutty et al. 76 (1): 53 -- Journal of Cell Science
Regulation of cell growth by vitreous humour -- Lutty et al.
Extracts of normal vitreous have been found to inhibit angiogenesis in two
vitreous may be important in controlling neovascularization that results
jcs.biologists.org /cgi/content/abstract/76/1/53   (408 words)

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