Abstract
I am very thankful to publish a paper in this issue of the American Orthoptic Journal, in honor of my dear friend Dr. Philip Knapp. Very early in my professional life, I learned to respect Dr. Knapp for his unusual skill in strabismus, as well as to love him for the warmness of his human relationship. He was one of those men who know to take valuable conclusions from their experience. This is why he could offer so many good contributions to our science.
Dr. Knapp and I had something in common, which was our interest in the surgical treatment of superior oblique palsy. This was the subject of my thesis (to achieve the title of Medicine Doctor) in 1972. I feel this paper is an homage to my dear departed friend.