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 her practice.

He has given numerous lectures all over the world about refractive surgery, has organized several meetings on refractive topics, and is regularly invited for Live Surgery Sessions to teach colleagues ophthalmologists. He is a member of the main Ophthalmological Societies in the world and 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 main articles in Ophthalmic Journals, has contributed to a textbook on Refractive Surgery, published in the USA, and more recently to a another textbook on Cataract Surgery after Refractive Surgery, also published in the USA