First ever 3D-printed corneas can be used as a corneal implant in corneal Transplant surgery. This step may act as a valid substitute for original corneal implants that are sometimes really hard to come by for those who need them.
It means the technique could be used in the future to ensure an unlimited supply of corneas.
Corneal Nerve Transplant from Foot
A hospital in Mumbai used nerves from the foot of a partially blind 60-year old woman to restore her vision.
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‘The worldwide shortage of corneal implants can be brought to a stop with the help of these 3D printable human corneas. They can be made by measuring the coordinates of a patients eye. One implant was made within 10 minutes.’
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As the outermost layer of the human eye, the cornea has an important role in focusing vision.
Yet there is a significant shortage of corneas available to transplant, with 10 million people worldwide requiring surgery to prevent corneal blindness as a result of diseases such as trachoma, an infectious eye disorder.
![Donated Heart, Liver, Corneas of Ghaziabad Woman Gives Life to Six]( "Donated Heart, Liver, Corneas of Ghaziabad Woman Gives Life to Six")
A 50-year-old woman's heart, liver, two corneas and both kidneys gave six others a fresh lease of life.
In addition, almost 5 million people suffer total blindness due to corneal scarring caused by burns, lacerations, abrasion or disease.
The proof-of-concept research, published today in Experimental Eye Research, reports how stem cells (human corneal stromal cells) from a healthy donor cornea were mixed together with alginate and collagen to create a solution that could be printed, a 'bio-ink'.
Using a simple low-cost 3D bio-printer, the bio-ink was successfully extruded in concentric circles to form the shape of a human cornea. It took less than 10 minutes to print.
The stem cells were then shown to culture - or grow.
Che Connon, Professor of Tissue Engineering at Newcastle University, who led the work, said: "Many teams across the world have been chasing the ideal bio-ink to make this process feasible.
"Our unique gel - a combination of alginate and collagen - keeps the stem cells alive whilst producing a material which is stiff enough to hold its shape but soft enough to be squeezed out the nozzle of a 3D printer.
"This builds upon our previous work in which we kept cells alive for weeks at room temperature within a similar hydrogel. Now we have a ready to use bio-ink containing stem cells allowing users to start printing tissues without having to worry about growing the cells separately."
The scientists, including first author and Ph.D. student Ms. Abigail Isaacson from the Institute of Genetic Medicine, Newcastle University, also demonstrated that they could build a cornea to match a patient's unique specifications.
The dimensions of the printed tissue were originally taken from an actual cornea. By scanning a patient's eye, they could use the data to rapidly print a cornea which matched the size and shape.
Professor Connon added: "Our 3D printed corneas will now have to undergo further testing and it will be several years before we could be in the position where we are using them for transplants.
"However, what we have shown is that it is feasible to print corneas using coordinates taken from a patient eye and that this approach has potential to combat the worldwide shortage."
Source: Eurekalert
Donated Heart, Liver, Corneas of Ghaziabad Woman Gives Life to Six
A 50-year-old woman's heart, liver, two corneas and both kidneys gave six others a fresh lease of life.
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In addition, almost 5 million people suffer total blindness due to corneal scarring caused by burns, lacerations, abrasion or disease.
The proof-of-concept research, published today in Experimental Eye Research, reports how stem cells (human corneal stromal cells) from a healthy donor cornea were mixed together with alginate and collagen to create a solution that could be printed, a 'bio-ink'.
Using a simple low-cost 3D bio-printer, the bio-ink was successfully extruded in concentric circles to form the shape of a human cornea. It took less than 10 minutes to print.
The stem cells were then shown to culture - or grow.
Che Connon, Professor of Tissue Engineering at Newcastle University, who led the work, said: "Many teams across the world have been chasing the ideal bio-ink to make this process feasible.
"Our unique gel - a combination of alginate and collagen - keeps the stem cells alive whilst producing a material which is stiff enough to hold its shape but soft enough to be squeezed out the nozzle of a 3D printer.
"This builds upon our previous work in which we kept cells alive for weeks at room temperature within a similar hydrogel. Now we have a ready to use bio-ink containing stem cells allowing users to start printing tissues without having to worry about growing the cells separately."
The scientists, including first author and Ph.D. student Ms. Abigail Isaacson from the Institute of Genetic Medicine, Newcastle University, also demonstrated that they could build a cornea to match a patient's unique specifications.
The dimensions of the printed tissue were originally taken from an actual cornea. By scanning a patient's eye, they could use the data to rapidly print a cornea which matched the size and shape.
Professor Connon added: "Our 3D printed corneas will now have to undergo further testing and it will be several years before we could be in the position where we are using them for transplants.
"However, what we have shown is that it is feasible to print corneas using coordinates taken from a patient eye and that this approach has potential to combat the worldwide shortage."
Source: Eurekalert
Donor Corneas Preserved for Up to 14 Days Fit for Transplantation
Corneal transplantation success unaffected for donor corneas preserved for 11 days, expanding pool of available tissue.
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Stem Cells may Play Significant Role in Corneal Wound HealingCorneal wound healing is a complex process involving cell death, migration, proliferation, differentiation, and extracellular matrix remodeling. | Advertisement
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