Ophthalmologist Stephen Best can work modern-day miracles.
For the past 25 years, the glaucoma specialist has removed cataracts, prevented blindness, and restored sight to hundreds, if not thousands of people.
The original West Coaster has travelled the globe with his work, teaching others to treat glaucoma thereby reducing preventable blindness with organisation Sight For All.
He speaks to Jim from Ulaanbaatar, Mongolia.