In fact, there’s been no change in his prescription in a year.
In fact, one side went down 0.25 as my brilliant UK Opthalmologist deduced that he was not in need of it, and many kids opt for a slightly higher power than they need during the tests. Not to be fooled, this doc. The previous tests, the first, were conducted in Germany on similar equipment, but without a master sleuth operating them.
In short - MiyoSmart lenses are fricking brilliant and kids should be put into them immediately if they need glasses. They are twice the price in Germany than in the UK, like most things, but at least we had the choice.
When I was a lad, they only had a chart of ever-shrinking letters and can-you-tell-the-difference-between-Mickey-Mouse-and-Goofy-in-this-comic before they bolted a stronger pair of goggles on, fast forward 44 years and I’m a -10, and could well have been worse had I not found my optician 31 years ago. Now we monitor my eyes for diseases and potential retinal detachment.
But yes, be outdoors AND have passionate experts looking out for your vision.