I'm an optometry student, and I'm trying to figure out the difference between daily and monthly contacts. A few dailies seem to have the same materials, water contents and oxygen permeabilities as biweekly/monthly lenses of the same brand. Sometimes these dailies are thicker, thinner, or the same thickness as their biweekly/monthly counterparts. So is it just the packaging and care procedures that are different, or is there some other attribute that distinguishes them?
The lenses I'm looking at are:
SofLens Daily Disposables / SofLens 59
ProClear 1-Day / ProClear
1-Day Acuvue / Acuvue Colors
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