A 60-year-old woman blind for nearly a decade,has recovered her sight after surgeons implanted a tooth in her eye as a base to hold a tiny plastic lens,her doctors said.
Sharron Kay Thornton,from the southern US state of Mississippi,lost her sight in 2000 when she came down with a case of Stevens-Johnson syndrome,a rare disease that scarred her cornea,according to the University of Miamis Bascom Palmer Eye Institute.
For patients whose bodies reject a transplanted or artificial cornea,this procedure implants the patients tooth in the eye to anchor a prosthetic lens and restore vision,said Thorntons surgeon Victor Perez.
In the procedure which was pioneered in Italy but was a first in the United States the medical team extracted Thorntons canine or eyetooth and surrounding bone,shaved and sculpted it,and drilled a hole into it to insert an optical cylinder lens.
We take sight for granted,not realising that it can be lost at any moment, the grateful patient said. She said people should imagine what it is like if you could keep your eyes closed just for one week… its amazing what you see when you open your eyes again.
The tooth and the lens were implanted under the patients skin in the cheek or shoulder for two months so they could bond,then they were carefully implanted in the centre of the eye after a series of procedures to prepare the socket.
A hole is made in the mucosa for the prosthetic lens,which protrudes slightly from the eye and enables light to re-enter the eye allowing the patient to see once again, read an Eye Institute statement.
Following a series of operations,medical personnel removed the bandages from Thorntons eyes two weeks ago. She was able to recognise objects and faces a few hours later,and two weeks later she was able to read newspapers,the Eye Institute said.
Im looking forward to seeing my seven youngest grandchildren for the first time, said Thornton.