Why are there subsequent corrections?

Dr. Victor Derhartunian explains why follow-up corrections may be necessary after laser eye surgery

The subsequent corrections are due to the fact that the spectacle values can also change every day, even if only slightly.
In addition, we have the influence of wound healing, which affects the entire healing process, and the eye must be seen as a dynamic system, not as a rigid piece of plastic.
This means that there is still internal movement in the eye, and ultimately it is a matter of determining the optimum values for the patient through treatment planning so that we can achieve the best possible result.