Most patients who reacted to injections to help their vision have yet to recover

SHANGHAI - Though 10 of the 61 patients who suffered adverse reactions from receiving Avastin injections have recovered, the source and use of the controversial drug is still unknown.

Last week, 116 patients received Avastin injections to treat macular degeneration at the Shanghai No 1 People's Hospital. Sixty-one of the patients experienced negative symptoms like pain, red eyes and unclear vision, and returned to hospital for further treatment.