“What they didn’t expect was that the 0.01% preparation would be more effective than the 0.02%.”
Ohio State gave 489 kids low-dose atropine, the same drug used to dilate pupils at the eye exam. Three years in, the weaker dose slowed eye growth more than the stronger one. No drug is approved in the US or Europe to slow myopia, and half the world is expected to have it by 2050. The trial used a preservative-free formula under development, so the cheap drug arrives as a new product with a new price.