So sorry to hear about your poor vision after corneal graft surgery for keratoconus surgery. Unfortunately corneal grafts can fail or get rejected for many reasons after surgery. This often results in blurred vision which sounds like the case for you.
Your cornea specialist would be able to maximise your outcome by treating you appropriately for the graft rejection. If in the long-term the graft is not optically viable, then unfortunately there are few other options for future visual rehabilitation apart form a repeat cornea graft.
Until that time though, you should pursue maximal medical therapy in an attempt to salvage any useful vision from the existing graft.
