Although having the mutation more than doubles a person's risk of the disorder, which causes loss of central vision, it doesn't mean that person will automatically develop the disorder. (discovermagazine.com)
LHON is associated with painless, sudden loss of central vision in the 1st eye, with the 2nd eye sequentially impaired. (gensight-biologics.com)
A man in his 80s and a woman in her 60s received the treatment for age - related macular degeneration (AMD), a condition which leads to a rapid loss of central vision. (newscientist.com)