To answer the first question there is no fixed number of injections that are required. Each patient responds differently and the number of injections depends on how the eye responds to treatment. I generally give an estimate of 3-4 injections as most patients need 3-4 injections to stabilize. However, some patient may need less injections and some may need more. The injections are usually given at 1 month intervals. The injection is given inside the white part of the eye and is not painful. You can resume your daily activities immediately following the injection with no additional restrictions post injection, no admission required.
To answer the second question, the aim of treatment is not complete visual recovery as that is not possible in most cases. The aim of treatment is to prevent further visual loss and try to regain some meaningful vision back. The disease is age related and will progress eventually but with treatment we slow down the progress or in some patients we are even able to halt the progress.