I use >>one<< stickon magnifier on my riding glasses. Works very well, can read computer, watch, see little pieces of glass in tires, etc. Doesn't take long at al to get used to seeing up close through one eye only. Also, I mount the lense upside down- flat part against bottom of lense- less intrusive straight ahead, wider field down. I got min online, I understand Walgreens carries them now.