"Refused by the public system"

I recently went to Sydney Eye Hospital in hopes that they would be able to help me with my ongoing and worsening eye condition. I had been to a private specialist who had produced a report on the issue. I have been suffering from severe double vision and it is only getting worse with time.

On the visit the doctors tested for everything they could, looking for the cause of the problem. After completing all these tests they stated that although they had been able to see that double vision was occurring that they weren’t able to tell me why. I presented the report from the specialist and the doctor read through this. They noted that the issue was not in my brain (I had suffered from an aneurysm some time ago), but rather my retina.

At this point they told me that I should go back to my specialist as they were better to perform the required surgery and that I should not return to Sydney Eye Hospital. The specialist is very expensive and I cannot afford the cost of the surgery - this is why I went to Sydney Eye Hospital. With my eyesight deteriorating and a lack of money to get the surgery through private channels, what am I supposed to do when the public system refuses me?