Dr. Mathys is currently the General Secretary of the BSCRS (Belgian Society of Cataract & Refractive Surgery) and has a special interest in surgery since the beginning of his practice. He has given numerous lectures about refractive surgery, has organized several meetings and courses on refractive surgery, and is regularly invited for Live Surgery Sessions during national and international conventions. He is an active member of the ASCRS (American Society of Cataract & Refractive Surgery) and the ESCRS (European Society of Cataract & Refractive Surgery). He has published several articles in international Ophthalmic Journals, has contributed to a textbook on Refractive Surgery, published in the USA and more recently a book “Cataract Surgery after Refractive Surgery”.