3D printed corneas to prevent corneal blindness

The World Health Organisation estimates that 10 million people worldwide require surgery to prevent corneal blindness. A further 4.9 million already suffer from complete blindness due to corneal scarring. The cornea is the transparent first layer of the eyes that light goes through and is essential to vision. With not nearly enough donors supplying transplantable corneas, a revolution in this field of medicine is greatly needed. The solution is pointing to 3D bio-printing.

3D Printed Corneas

Earlier this year, researchers from the University of Newcastle developed a 3D printed artificial cornea for the first time. After studying a volunteer’s eye, they had gathered enough data and could design a 3D model of the cornea. One of the most challenging aspects, Che Connon (tissue engineer) explains was using the right materials to hold the concave shape as well as finding an ink thin enough to squirt through a 3D printer’s nozzle. Using only one healthy human cornea they were able to 3D print 50 artificial ones; a breakthrough advancement in ophthalmology.

The two creators of the artificial cornea | Source: Newcastle University

4D Biomaterials to Offer New Possibilities

Now, coming from the same University, Martina Miotto, a post-doctoral researcher in tissue engineering has created a self-assembling cornea from 4D biomaterials. 4D biomaterials change shape or even function when exposed to specific external stimuli.