After the operation. Pain after a corneal graft is seldom severe and can be expected to settle quite quickly. The improvement in vision, however, is often rather slow. This is because the cornea takes a long time to heal, and as it does so, shape changes in the cornea lead to changes in the way it focuses light. They are not dissolving sutures and will eventually need to be removed.
Some surgeons use both methods combined.
These diagrams show what these suture patterns look like. It may then be necessary to adjust or remove sutures to reduce the astigmatism. Adjustment of continuous sutures may be very helpful for some patients. Adjustment may be done in the clinic or in the operating theatre, depending upon circumstances. It enables the cornea to sit more snugly in place, allowing it to focus better.