More information about the addition:
The Air Optix® Aqua Multifocal lenses are available in 3 different additions. Low for an addition up to and including +1.25, indicated with "LO" on your case. Medium for an addition of +1.50 to +2.00, indicated by "MED" on your case and High for an addition of +2.25 to +2.50, indicated by "HI" on your case.