Dr. Sigesmund completed an internship in Internal Medicine at Sunnybrook Health Sciences Centre and then practiced Family Medicine from 1988-1990. She then went on to do an Ophthalmology Residency at the University of Toronto and graduated in 1993. After that she did a research fellowship in Molecular Genetics at the Research Institute at The Hospital for Sick Children,Toronto, which was funded by a Medical Research Grant (MRC) of Canada/Muscular Dystrophy. Subsequently she was granted a Post Doctoral Fellowship by the Canadian Institute of Health Research (CIHR) for the Molecular and Clinical expression of Retinal Dystrophin. This was followed by a fellowship in Strabismus and Paediatric Ophthalmology at both The Hospital for Sick Children and Toronto Western Hospital. She then became Staff in the Ophthalmology Department at the Hospital for Sick Children and the Michael Garron Hospital. She currently has a private practice in the community. where her referral base is from around Ontario. She also maintains a clinical and surgical practice at the Michael Garron Hospital where she also runs a Retinopathy of Prematurity Clinic for part of the Greater Toronto Area. She is a Lecturer in the Department of Ophthalmology at the University of Toronto, having taught International ophthalmology fellows, ophthalmology residents and medical students. She has published in the following journals, Nature Genetics, American Journal of Ophthalmology, Investigative Ophthalmology and Visual Science, Documenta Ophthamologlica and the Archives of Internal Medicine.
She is a member of the American Association of Paediatric Ophthalmology and Strabismus, the Royal College of Physicians and Surgeons of Canada in the Division of Surgery and the Canadian and American Association of Ophthalmology.
She has an expertise is in the area of Paediatric Ophthalmology, Binocular Vision and Strabismus in both adult and paediatric population.