What are the physical differences between daily and monthly contacts?
In: Chemistry
The materials and tolerances generally. With frequent disposables, materials that are more gas permeable and more comfortable can be used because they are expected to be replaced. For longer wear contacts, the materials have to be long lasting as to not damage your eyes as they degrade.
Easier prescriptions are easier to mass produce as well. A manufacturer may not build a sophisticated manufacturing line to make dailies for such a small percentage of people, so those with tougher prescription are usually limited to longer lasting pairs.
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