Babies born with high refractive error, astigmatism, or albinism see faces as blurry shapes. Without early correction, the visual cortex eventually stops trying to interpret the signal being sent from the eyes. Doctors call it amblyopia.

Paediatric ophthalmologists don't wait for babies to get old enough to read eye charts though - they use retinoscopy: shine a light into their eyes and watch how it reflects, then they create a prescription and fit tiny frames.

What you’re seeing here in these first few, amazing seconds comes after months of screening, measurement, and fitting.

Science = miracles.