Diagnostic Challenge
- The traditional FA camera can allow only a 50- degree field of view of posterior pole imaging.
- or 75-degree field of view with composite images15.
- And we still do not see the areas of peripheral vasculopathy previously demonstrated in Case 1.
- There have been reports on using contact lens-based systems to increase the field of view to 160 degrees in traditional FA (disadvantages: good patient cooperation is a must, sedation is often required, images often contain significant peripheral blur)12,14.