On this subject of reusing Daily Lenses I came across this article from a UK Tabloid on-line:

http://www.dailymail.co.uk/health/article-357082/Contact-lens-firms-ripping-off.html

It dates from circa 2005 and it is a bit like lobbing a hand grenade into this forum, but it does not surprise me, given my own tests on Daily Disposable lenses, especially with the Bausch & Lomb Daily & Monthly disposable lenses.

I tend to take what is written in these tabloids with a pinch of salt, but I think this article is largely accurate!

'The company (J&J) admitted to the Daily Mail that there is no medical reason why the daily lenses could not be reused and worn as long as the other brands (1-2 weekly and Monthly Disposables), provided they were disinfected in the same way'. (Information inside the brackets added by me to clarify the statement).

Again, I am not advocating that people reuse daily disposable or other Disposable lenses, but note the comments from J&J in this article which are food for thought.

EDIT

I'll add this health warning so as to avoid any confusion here:

Although the Mail On-Line article reports that some Daily Lenses are similar or the same as Weekly or Monthly lenses by a given manufacturer, that does not mean that all manufacturers are doing this, nor does it mean that all lenses in a manufacturer's product range are of the same material and physical characteristics. One would have to look at each lens's detailed physical specification, including Dk values, before drawing any conclusions.

knotlob