Sean,
My son is 16 years old, and was diagnosed 6 years ago. Is it ok to have a voice conversation with you to ask you many questions ? I found some research scientists in Germany and England that I've been communicating with them, and it seems they are more advanced in Europe with Gene Therapy that can control the Ornithine levels and preserve the vision.
Anyway, let me know if this is OK with you. I fly a lot so my access to computers are very rare.... hence my request for a voice call. I live in Maryland/DC area.
Best regards
Henry