Hi. I'm sorry to hear that news. I can imagine how you must be feeling. I hope you don't have to wait too long to see your boy's specialist. Hopefully he will have minimal damage seeing as he only been on the med 12 months. That was the recommended time for an eye check, so you would imagine they would only let you go for an amount of time that wouldn't cause too much damage...surely?
All the best. Hang in there mum.