About 20 years ago I noticed I was having difficulty focusing for long periods and solved that with reading glasses (in addition to my contacts to correct nearsightedness. Found some great, extended wear contacts that I wore continously for about a week on the AT and PCT with reading glasses to be able to read maps. About 8 or so years ago, the same extended wear contacts became available in multi-focal versions so goodbye reading glasses. You are correct in hygiene being a big task for contacts, but being able to wear them continuously, day and night, for a week moves the hygiene issues to towns. I use rewetting drops morning and night in between.