University of Massachusetts medical professionals in the study of vision and hearing have developed doctoral professors to study eye injuries such as chemical burns. Usually in such cases, an irreversibly damaged brace cannot be restored. Donor implantation is transplanted, but its transplantation requires support in the idea of a healthy surface of the eye, and it is also often severely damaged.
The standard method involves removing a small amount of limbal epithelial cells from healthy eyes to replace them with identical patches in the damaged eye. But everything depends on the size of the damaged area – sometimes it is so large that it is impossible to take the required number of healthy eye cells without the risk of damaging it already. Borrowing a cell from an external donor always means the risk of rejection.
American scientists have learned how to remove limbal stem cells and grow a large amount of cell mass from them. In one case, this resource immediately transplanted a new cornea to the patient, in the second case, it took three years of experiments, since the grown cells did not want to take root. As a result, the vision of this patient returned only partially.
The same interest arose in patients #3 and #4, after which the limbal corneal transplant was not required at all. Their visual apparatus has developed so much that it was decided not to take risks with further procedures and stop there. Unfortunately, in the fifth patient, taken from his own healthy eyes, the stem cells did not begin to multiply, and it was not possible to cure him. An 18-month follow-up phase is currently underway to assess the long-term effects of your illness. therapy.
Source: Tech Cult
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