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Topic: Cornea transplant


  
  Better Cornea Transplant - Ophtalmologists Develop Laser Procedure to Shorten Patients' Recovery
HOW IT WORKS: Cornea transplants have traditionally only been performed in severe cases, since the majority of transplant recipients don't see improvements in their vision for at least six months, and even then strong glasses or contact lenses are needed because of remaining distortions.
The cornea is slow to heal, and the transplant can remain vulnerable to injury for the rest of the patient's life.
As many as 40,000 cornea transplants are performed each year in the United States.
www.aip.org /dbis/stories/2006/15210.html   (490 words)

  
  Organ transplant - Open Encyclopedia   (Site not responding. Last check: 2007-10-31)
An organ transplant is the transplantation of an organ (or part of one) from one body to another, for the purpose of replacing the recipient's damaged or failing organ with a working one from the donor.
That term is also used for a special form of liver transplant, in which the recipient suffers from familial amyloidotic polyneuropathy causing the liver to produce a (very slow) poison; their liver can be transplanted into an older patient who is likely to die from other causes before a problem arises.
The last record transplant operation of eight organs, the liver, stomach, pancreas, small and large intestine, spleen, and two kidneys, was performed in the USA in March 2004.
open-encyclopedia.com /Organ_transplant   (1027 words)

  
 Organ transplant -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-31)
An organ transplant is the transplantation of a whole or partial (A fully differentiated structural and functional unit in an animal that is specialized for some particular function) organ from one body to another, for the purpose of replacing the recipient's damaged or failing organ with a working one from the donor.
Most pancreas transplants are performed for (Diabetes caused by a relative or absolute deficiency of insulin and characterized by polyuria) diabetes mellitus with chronic renal failure due to diabetic (A disease affecting the kidneys) nephropathy and are transplanted together with a kidney.
The latest record transplant operation of eight organs, the liver, stomach, pancreas, small and large intestine, spleen, and two kidneys, was performed in the (The army of the United States of America; organizes and trains soldiers for land warfare) USA in March 2004.
www.absoluteastronomy.com /encyclopedia/o/or/organ_transplant.htm   (1968 words)

  
 Cornea Transplant Surgery in the East Bay and Oakland Area
Cornea transplant surgery refers to the replacement of a diseased cornea with a human donor cornea.
Cornea transplant surgery is required to treat a variety of conditions that cause the degeneration, deformation, or clouding of the cornea.
The clouding of the cornea is often a result of traumatic injury or trauma to the eye, hereditary or genetic disorders, eye surgery complications, and bacterial infection of corneal scars.
www.batravision.com /html/cornea.html   (1371 words)

  
 Cornea transplant Summary
In a corneal transplant, a disc of tissue is removed from the center of the eye and replaced by a corresponding disc from a donor eye.
A cornea transplant, also known as a corneal graft or penetrating keratoplasty, is a surgical procedure where a damaged or diseased cornea is replaced by donated corneal tissue which has been removed from a recently deceased individual having no known diseases which might affect the viability of the donated tissue.
The cornea is the clear part of eye in front of the iris and pupil.
www.bookrags.com /Cornea_transplant   (2656 words)

  
 Cornea Treatment and Transplant Surgery by a Skilled Ophthalmologist in Florida - Ocala Eye
In addition, the surgery is safer as the new cornea is inserted through a small incision rather than a complete opening of the front part of the eye reducing the chance of a devastating hemorrhage during the surgery or infection afterwards.
The cornea is also left much thicker than the original due to the addition of tissue to the posterior aspect of your current cornea.
Like full thickness corneal transplantation, eye drops are required for at least a year and more often for the rest of your life to prevent graft rejection, where the body recognizes the tissue as being foreign and reacts against it.
www.ocalaeye.com /html/cornea.html   (2052 words)

  
 Cornea Research Foundation - Cornea Conditions & Updates
This occurs because evaporation of fluid from the cornea is decreased while the eyes are closed during sleep, and accumulation of fluid in the cornea during the night results in corneal swelling (edema).
Corneal hydrops, or marked swelling of the cornea may occur when severe bulging of the cornea results in a tear in the deepest layer of the cornea (Descemet's membrane), allowing fluid from the inside of the eye to permeate the cornea.
The rigid lens masks the underlying irregular cornea and functions as the new refractive surface of the eye, with the tear film filling in the space between the back of the contact lens and the front of the eye.
www.cornea.org /research_cornea.html   (1741 words)

  
 Cornea
Corneal epithelial dystrophies are disorders involve the front surface of the cornea which result in decreased vision due to cloudiness, and surface irregularities of the cornea.
Recurrent corneal erosions are a disruption of the front surface of the cornea, which recurs in the same area of the cornea.
The condition is due to weakening and thinning of the central portion of the cornea causing a change in shape of the central portion of the cornea.
www.coopereyecare.com /cornea.htm   (2385 words)

  
 Corneal transplantation   (Site not responding. Last check: 2007-10-31)
In a corneal transplant, a disc of tissue is removed from the center of the eye and replaced by a corresponding disc from a donor eye.
Corneal transplants are highly successful, with over 90% of operations in United States achieving restoration of sight.
A hereditary disease of the inner layer of the cornea.
www.healthatoz.com /healthatoz/Atoz/ency/corneal_transplantation.jsp   (1354 words)

  
 Viewing Hints
In keratoconus, a corneal transplant is warranted when the cornea becomes dangerously thin or when sufficient visual acuity to meet the individual’s needs can no longer be achieved by contact lenses due to steepening of the cornea, scaring or lens intolerance.
- (corneal transplant) is the excision of all layers of the central portion of the cornea and replacement with a clear cornea from a human donor.
- the surgical removal part of the surface of the cornea and its replacement with a donor cornea that is reshaped and transplanted to the patient’s cornea.
www.nkcf.org /transplant.html   (1838 words)

  
 Cornea transplants: Restoring sight with donor tissue - MayoClinic.com
A healthy cornea — the transparent, dome-shaped surface of your eye —; is an essential component of sharp, clear vision.
Cornea transplants are one of the most common organ and tissue transplants performed in the United States.
In a cornea transplant, a surgeon replaces a portion of your cornea with a different one from a donor.
www.mayoclinic.com /health/cornea-transplant/EY00004   (1284 words)

  
 Corneal Transplantation Cornea Transplant Surgery Surgeon DSEK San Clemente Laguna Hills Aliso Viejo Irvine Newport ...
Corneal Transplantation Cornea Transplant Surgery Surgeon DSEK Occasionally, corneal transplant is combined with other types of eye surgery (such as cataract surgery) to solve multiple eye problems in one procedure.
In conventional corneal transplant surgery (called penetrating keratoplasty), the surgeon removes the window of cloudy tissue from the patient's cornea and replaces it with donated tissue from a cadaver.
Lamellar cornea transplants - advantages and candidates Individuals whose disease is in the anterior portion of the cornea, such as patients who have had complications from LASIK surgery or who have certain corneal dystrophies, are excellent candidates for lamellar corneal transplants.
www.harvardeye.com /procedures/cornealtransplantation.html   (2335 words)

  
 Corneal transplantation   (Site not responding. Last check: 2007-10-31)
In corneal transplant, also known as keratoplasty, a patient's damaged cornea is replaced by the cornea from the eye of a human cadaver.
Corneal transplant is used when vision is lost in an eye because the cornea has been damaged by disease or traumatic injury.
Although the cornea is not normally vascular, some corneal diseases cause vascularization (the growth of blood vessels) into the cornea.
www.lifesteps.com /gm/Atoz/ency/corneal_transplantation.jsp   (1384 words)

  
 Corneal Transplants
This has many advantages over a normal cornea transplant in that the rate of rejection is almost negligible and if it does reject it can easily be replaced with another lamellar transplant with almost no additional risk to the patient.
Most excellent transplant surgeons who have an academic interest in the advancement of knowledge on cornea transplantation are also members of the Castroviejo Cornea Society.
Of course, corneal transplant surgery would not be possible without the hundreds of thousands of generous donors and their families who have donated corneal tissue so that others may see.
www.laser-prk.com /corneal.htm   (1560 words)

  
 Cornea Transplant - Health News Story - WSOC Charlotte
The innermost layer of the cornea is the endothelium.
Cornea Transplant Once the endothelial cells in the cornea are destroyed, they can't be replaced by the body.
Traditional cornea transplantation removes all the layers of the cornea.
www.wsoctv.com /health/6495478/detail.html   (1001 words)

  
 Cornea transplantation - the gift of sight
Cornea transplants are successful sight-saving operations, with 93% of grafts functioning after one year.
Last year around 1,911 people donated their corneas after their death but there is still a shortage in the UK – more people could benefit from a sight-saving transplant if more corneas were donated.
Corneas are sent from other eye banks and hospitals throughout the UK for storage and subsequent distribution to more than 200 cornea transplant units
www.uktransplant.org.uk /ukt/newsroom/fact_sheets/cornea_transplantation_fact_sheet.jsp   (700 words)

  
 Cornea Transplant (Corneal Transplant or Penetrating Keratoplasty) - AllAboutVision.com
A cornea transplant, which replaces damaged tissue on the eye’s clear surface, also is referred to as a corneal transplant, keratoplasty, penetrating keratoplasty (PK), or corneal graft.
A corneal transplant might be required in cases of eye conditions such as an eyelid that turns inward (trichiasis), causing eyelashes to rub against and scar the eye’s surface.
Also, donor eyes supplying transplant tissue are meticulously screened for presence of diseases such as hepatitis and AIDS or other damage to ensure the health and safety of the recipient.
www.allaboutvision.com /conditions/cornea-transplant.htm   (1283 words)

  
 Manhattan Cornea Transplants - Corneal Transplant Surgery NYC - Gregory Pamel, MD
In a corneal transplant operation performed at our LASIK New York ophthalmologist office, the central portion of the cornea is replaced with tissue donor cornea from an individual who has donated his cornea to a local eye bank after death.
Corneas for corneal transplant procedures come from individuals who have donated their eyes to be used after their death for the benefits of others.
Certain patients are unable to tolerate spectacles after corneal transplant operations because of a prpblem that occurs during the healing of the cornea.
www.nyclasik.com /html/cornea.html   (4469 words)

  
 Cornea Transplant
The cornea is the clear part of the eye that covers the pupil.
Approximately 40,000 corneas are transplanted yearly in the United States.
Because the cornea usually has no blood vessels in it, it is considered an immune privileged tissue.
www.huroneye.com /cornea.html   (558 words)

  
 ScienceDaily: UCI Eye Doctors Invent Laser-assisted Cornea-transplant Surgery
Cornea transplants are performed on the “front window” of the eye, using living tissue from donors to replace corneas in which swelling, scars, distortions and degenerations are causing blindness.
While most transplants are successful in providing the patient with a clear cornea, the majority of cornea transplants take more than six months to provide good vision, and even then strong glasses or contact lenses are needed.
In addition, stitches usually need to stay in place for years, because the cornea is slow to heal and, as a result, the transplant remains a weak spot, vulnerable to injury for the rest of the patient’s life.
www.sciencedaily.com /releases/2005/05/050503153640.htm   (797 words)

  
 Eye Bank Association of America
The physician certifying a patient's death is not involved with the eye procurement or with the transplant.
While promising advances are being made in artificial corneas, they tend to be reserved for patients with diseases that preclude donor cornea transplantation.
Corneas determined to unsuitable for transplant may be used for medical research and teaching.
www.restoresight.org /general/faqs.htm   (766 words)

  
 New Cornea Transplant Method - DSAEK in Dallas at Cornea Associates of Texas
The most likely option was for them to undergo full thickness corneal transplant – a complicated procedure that surgically replaces the entire damaged cornea with a donor cornea.
Rather than removing the entire cornea, our transplant doctor in Texas makes a small incision in the side of the eye and replaces only the damaged portion at the back inner dome of the cornea with donor cells.
The transplanted cells begin pumping fluid out of the cornea, thus creating a suction that causes them to adhere to the back of the host cornea.
www.corneatexas.com /html/procedures_dsaek.html   (464 words)

  
 Cornea Transplant Columbus, Ohio
The cornea must remain transparent and of regular curvature to properly focus and transmit light as it enters the eye.
The tension generated by the sutures within the cornea often cause distortion of the curvature of the graft, causing the refraction of the eye to shift unpredictably.
If the cornea surface is regular, and the prescription of the other eye is not too different, it is sometimes possible to prescribe glasses during this early rehabilitation period but the prescription lenses may need to be periodically changed as the cornea heals.
www.icanseeclearly.com /otherservices/cornea.htm   (1214 words)

  
 The Eye Center - Cornea Transplant
A corneal transplant involves replacing a diseased or scarred cornea with a new one.
The donated cornea is thoroughly tested for infectious disease, and for its visual correction capabilities.
In corneal transplant surgery, the surgeon removes the central portion of the cloudy cornea and replaces it with a clear cornea, usually donated through an eye bank.
www.theeyecenter.com /educational/0020.htm   (647 words)

  
 Glaucoma, Cataracts, Cornea Transplant, Botox - Chicago, Illinois
The cornea transplant involves replacing the damaged cornea with a healthy cornea donated to an eye bank.
The success rate for cornea transplant is very high, and most patients are pleased with their improved vision.
Complementing the fine surgeons of Chicago Cornea Consultants is a surgical team of trained specialists and highly skilled optometrists who are an integral part of the high-quality vision care we provide.
www.chicagocornea.com /html/other.html   (1065 words)

  
 CorneaTransplant.org   (Site not responding. Last check: 2007-10-31)
If you have had a cornea transplant or will need to have one some time in the future, this website is for you.
Cornea transplants are required for a number of corneal diseases and variety of other reasons.
You do not need to go through the cornea transplant surgery and recovery alone.
www.corneatransplant.org   (96 words)

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