Optical Nerve Atrophy. To certain level?

I met an accident around 8 years ago and got my head and the area, close to my right eye, bruised. From then, my right eye vision is dimmed. Around 3 years ago, a doctor (at Asian Eye Institute, Borivali East) told that the optic nerve is damaged and it cannot be cured. Around 6 months ago I consulted another doctor, who said that I have optical nerve atrophy, and suggested to take care of my another eye. I browsed through articles online and got to know that the damaged nerve cannot be healed, and over time it will lose its sight. I am a web app developer and spend almost 13-14 hours a day on the computer, and almost 1 hour on phone. I have reduced this to 10 hours working on the computer, not on phone. I am a pure vegetarian, 6.1 feet tall, thin, having BMI 16.5 (underweight). I am facing sever headache and vision problem from past 4 days constantly. I want to know can this be cured or at reduced to certain level? If yes, when can I get an appointment.