U. S. senators propose retinal scanning may serve as an identity proof

Several U. S. senators have proposed retinal scanning as an identification method to aid in immigration reform.

In retinal scanning, a person looks into a scanner and a ray of light is reflected off the retina, at the back of the eye.

The configuration of retinal blood vessels is unique to each individual and cannot be altered, said Dr. Brian Proctor, an ophthalmologist at Gottlieb Memorial Hospital in Melrose Park, Il.

"You can't change the back of your eye so it definitely is a proof positive method of identification," said Dr. Proctor. "Use of retinal scanning as a means of identification has been around for awhile; technology has now caught up with the idea and advanced computerization including database availability can make this a reality."

Dr. Proctor regularly performs a version of retinal screening in the diagnosis and treatment of certain eye conditions and in preparation for complicated eye surgeries.