Yes, it is very possible for people with severe myopia. Because when bungee jumping, people would fall down with accelerated speed of 9.8meters per second. It is easy to make people with serious myopia to have amotio retinae and encephalemia for most of the time the jumper is head-down gestured. It is an exciting sports which is not suitable for people with brain or heart problem. In your case, your myopia is mild. It should be OK. Meanwhile you should also check your disease history, is there any problem with your heart or brain to make ensure you are OK with this stimulative sports. Anyhow, I dare not to jump it. The best of luck!