The American Academy of Ophthalmology (AAO) is the largest national membership medical association of ophthalmologists medical doctors (MDs) specializing in eye care and surgery including medical, surgical and optical care.
http://www.aao.org/ The Prevention of Blindness Society of Metropolitan Washington (POB), the largest local prevention of blindness agency in the United States, is dedicated to the improvement and preservation of sight by providing services, education, advocacy and innovation.
http://www.youreyes.org/