Having heard that the pukker ones were going to cost over 300 quid, I got a pair of ready readers, cost a fiver. They had big plastic lenses, and I Dremmeled out a slot for looking ahead. they worked fine, but I did notice my crew's sniffled laughter from time to time.
It was years before I needed readers on my licence, "custom, on the first day of every" was something that just came out automatically as the slider reached my nose. Good...excellent, the AME would say as he took the blurred object away.