Hey guys :)

im an optom student doing an assignment on the different SOLA progressive lenses currently on the market.. but im comPletely confused about the difference btw SOLA One, SOLA AO Easy, SOLA One HD, SOLA AO Easy HD, and SOLA One Ego lenses. could someone pls help me?

and what makes a SOLA graduate gold different from a standard SOLA graduate lens? and the same for XL and XL Gold lenses; is XL Gold the same as XL but just softer?

and what was it about the percepta that made it such a failure? (my lecturer told us that it was a disaster...) and is this lens design hard?

and what kind of a lens is the SOLA VIP?

ah sorry for asking so many questions but im pretty confused n my assignments due tomorrow. :(

ill appreciate any help that anyone offers pls!