January is Glaucoma Awareness Month, when the medical community aims to spread information about the disease, which causes loss of vision and affects millions of people worldwide. Joseph Lovatt released the documentary “Going Blind: Coming out of the Dark About Vision Loss” in 2010, as he began to lose his own sight. In the film, he interviews various individuals afflicted by blindness, including an art teacher and an Iraq War veteran, about their personal experiences, while sharing pertinent information about detecting, treating, and coping with vision loss. The New York Academy of Medicine hosts a free screening of the film, followed by a discussion and Q. & A. with the Peabody Award-winning director.