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Singapore Performs Cutting-edge Eye Surgeries
Date:4/9/2010

rate of well over 90 percent, it is also fast becoming an international referral centre for complicated cases.

"Several eye conditions cause clouding of the normally clear cornea, leading to blindness. In such cases, cornea transplant is the solution," said Prof Tan.

Age-related corneal degeneration and corneal scars due to direct eye injuries are the top two reasons for transplantation. Other causes include inherited corneal diseases and congenital birth defects.

DALK / DAESK
Two transplant procedures are available at the moment to treat corneal damage. The first is termed Deep Anterior Lamellar Keratoplasty (DALK) – a new form of transplantation where only the damaged front layers of the cornea is exchanged, leaving the innermost layer intact.

"DALK is technically more difficult, but results are much better because transplant rejection is almost zero. Usually, it is the inner layer of the cornea that is prone to rejection," explained Prof Tan.

For this reason, DALK is often performed in cases where the patient's inner corneal layer is healthy. Success rate for DALK is over 95 percent, and long term graft survival is far superior to conventional treatments. At SNEC, 30 percent of all the transplants are DALK.

The second type is cornea transplantation is DSAEK, or Descemets Stripping Endothelial Keratoplasty, where the inner, endothelial layer of the cornea needs to be transplanted.

"DSAEK is for diseases of the inner layer, which is the main problem in ageing diseases. It is a relatively new
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Source: PRWeb
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