Dr Kowal's practise is an Ophthalmologist with interests in strabismus and paediatric ophthalmology. If the Health Insurance Commision statistics are accurate (and they show all procedures that are billed through Medicare), then over the period from July 1st 2019 - June 30th 2020, Dr Kowal personally performed 12% of all private strabismus surgeries in Australia and over 40% of all private strabismus surgeries in Victoria.