I can't believe no-one mentioned keratological lenses. Not only gives you a glasses free experience during the day, they also slow or stop the progression of myopia. Aren't these avaliable in the US?
For the uninitiated (as I was), they are hard plastic lenses that are worn at night. Initially the optometrist will take a variety or measurements of the eye and then a pair of lenses is manufactured. They are thicker than the standard disposable lenses and take a while to get used to and can be uncomfortable for a few weeks until you adjust to them. They work by shaping the outer part of the eye during sleep, when removed in the morning the outer part of the eyes have retained the shape from the lenses. Light entering the eye is then bent correctly and vision is almost 20/20.
If she was to stop wearing them her eyes would return to her standard myopic level, but hopefully not be any worse than before.
“[Keratological] lenses correct your vision while you sleep. They do this by applying a controlled shape to the cornea which is the front surface of the eye, eliminating myopia (short –sightedness).”