I set out to write a very melodramatic account of getting glasses. I’ve always been able to see rather well, or so I thought. It’s been over 10 years since my last visit to the optometrist and I’m sure my vision had degraded somewhere in there. Everything was different. They used to have the lights and the poofs, but it just felt different this time. There were 3 machines when I went in for my pre-exam. There was an autofocus machine which determined what I was looking at as a scene appeared before me, constantly flicking in and out of…