Corneal Transplantation - PowerPoint PPT Presentation

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Corneal Transplantation

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Cornea transplant is also known as keratoplasty or corneal grafting which can bring back vision, lessen pain and improve the look of a damaged cornea. When the entire is replaced by a healthy cornea, it is called penetrating keratoplasty, and when a part of the cornea is replaced, it is known as lamellar keratoplasty. – PowerPoint PPT presentation

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Title: Corneal Transplantation


1
About Corneal Transplantation
2
  • The cornea is the transparent front part of the
    eye which covers iris, pupil and anterior
    chamber. It is a layer in front of the eye which
    helps to focus the light so that you can see
    clearly.
  • If the cornea gets damaged, you have to replace
    with the healthy layer of tissues because when
    the light rays pass through the damaged cornea
    can get distorted and change your vision.
  • When all or part of the damaged or diseased
    cornea is removed and replaced by a healthy layer
    of tissues is called cornea transplant.

3
  • Cornea transplant is also known as keratoplasty
    or corneal grafting which can bring back vision,
    lessen pain and improve the look of a damaged
    cornea.
  • When the entire is replaced by a healthy cornea,
    it is called penetrating keratoplasty, and when a
    part of the cornea is replaced, it is known as
    lamellar keratoplasty.
  • The new cornea comes from the people who donate
    the tissue when they die. The donor of the cornea
    should not have any disease which may affect the
    chance of the survival of the donated tissue or
    the health of the recipient.

4
  • A donor can be of any age. Cornea transplant is
    recommended when medicine, cross-linking and
    conservative keratoconus surgery cannot heal the
    cornea anymore. Cornea transplant is helpful in
    several eye problems such as
  • Cornea scarring because of infection or
    injury
  • Corneal ulcers because of infection
  • Clouding, thinning or swelling of the cornea
  • Problem caused by an eye operation
  • inherited eye disease such as Fuchs
    dystrophy

5
  • When the cornea is damaged, it becomes less
    transparent and its shape change. So it prevents
    the light reaching to retina which causes the
    picture transmitted to the brain to be unclear or
    distorted.
  • The type of cornea transplant depends on which
    part of the cornea is damaged and how much is
    damaged. There are three types of cornea
    transplant-

6
  • 1. Penetrating Keratoplasty it is a full
    thickness transplant.
  • 2. Deep Anterior Lamellar Keratoplasty- in
    this transplant outer and the middle layer of the
    cornea is replaced or reshaped.
  • 3. Endothelial Keratoplasty in this
    transplant the deeper layer of the cornea is
    replaced.

7
  • Cornea transplant can be done by giving general
    anesthesia or local anesthesia.
  • In general anesthesia the person is unconscious,
    and in local anesthesia, the area of surgery is
    numbed.
  • The whole process of cornea transplant takes less
    than one hour, and you can leave the hospital on
    the same day or stay overnight, it depends on
    your condition.
  • Cornea transplant surgery is like other organ
    transplant surgery. There is a risk of
    complication in cornea transplant such as
    transplanted cornea can be rejected by the body,
    infection and other vision problems can occur.
  • According to data around 95 of full thickness
    cornea transplants have low risk and lasts for at
    least ten years.
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