The most important but probably rarest of these is infection within the eye. Infections are usually treatable but can be devastating. The second and probably commonest complication is of raised pressure in the eye.

Following a steroid injection into the eye it is necessary to have the eye pressure measured on a 2 weekly basis for the first 6 weeks. Such pressure rises are usually treatable with drops alone and it is rare but possible that people lose sight as a complication of high pressure. Retinal detachment might also occur but is usually treatable. It is also likely that some people having a steroid injection will develop a cataract. This can usually be treated.