A team of researchers from Italy have discovered a stem cell formula, using the stem cells of patients who were essentially blind. The formula succeeded in corneal transplantation in more than three-fourths of the blind patients.

This enabled some of the patients to see properly. The patients tested, suffered blindness either in one or both eyes. This was resultant of chemical or thermal burns in the eyes.

The visual ability was reported to have improved in patients who did not show problems in other parts of the defective eye, told lead researcher, Graziella Pellegrini, PhD, of the University of Moderna's Center for Regenerative Medicine.

The team undertook corneal transplants in more than 250 patients throughout the last ten years, with the help of stem cell system.

The study appeared in New England Journal of Medicine and presented at International Society for Stem Cell Research meet, last week in San Francisco.

"We followed the patients in this study for an average of three years and as long as a decade", said Pellegrini.

The process saw the researchers pulling out strong stem cells from the limbus, placed between the colored and white potions in the eye.