I've been wearing contact lenses a long time. I was first issued daily-wear disposables when I was fourteen. After being late to school every goddamn day for two weeks, my mother marched me back to the optometrist and got me extended-wear disposables -- the kind you could sleep in -- instead. A lot of people don't tolerate these well, but I do, and I've been wearing them ever since. Fitting these lenses is not the exact science they would like you to believe. Getting eyeglass prescriptions in general is not. They stick you in front of a rig with switchable lenses and ask you which one you like better, ffs. You go to the eye doctor to make sure your eyeballs aren't going to fall out, not for custom tailored prosthetics. Neither glasses nor contacts are ever 100% custom-fitted to your needs, at least outside of very specific circumstances. Glasses are ground to "close enough" specs from the settings available on the machine, and lenses come in fixed size/power ...