Experimental stem cell procedure for eye disease "too good to be true"?
The federal government is cracking down on what it describes as "unscrupulous" stem cell clinics selling unapproved treatments for eye problems like macular degeneration. Many people with fading vision have turned to stem cell therapy, believing it's their only shot of reversing their conditions. While some patients have reported improvements, others have fared much worse. Manuel Bojorquez reports.