Allowing More Gay Men to Donate Corneas Could Save Sight for Thousands: Study

U.S. and Canadian restrictions on cornea donations from gay and bisexual men prevent thousands of vision-restoring transplants and need to be changed, researchers say. A corneal transplant can cure some forms of blindness and visual impairment. The United States bans men from donating if they have had gay sex in the past five years; Canada has a 12-month restriction.