I've been using contacts for over three decades without any problems.

Recently, about 5-6 months ago, a chronic red eye developed in my left
eye when using contact lens (Accuvue from J&J) for more than 1-2 hours.
 I stopped using the contact lens for the left eye, and continued to
use the right eye contact lens.
Last month I couldn't use the right eye contact lens either because I
would get red eye for using it for only 1-2 hours.

I blame the solution used to clean them, Renu no rub solution.
I have never used the "moisture lock" solution that has been reported
as causing many problems.
When researching for the "Baush & Lomb moisture Lock" problem, I found
that a fungus called fusarium develops in your cornea, and that there
are some pills that prevent fusarium from spreading.  I decided to try
them out.

I used those pills and my red eye disappeared completely.   So, I
assume that the no-rub solution from Renu must have some kind of the
same problem as the moisture-lock solution.
I use now the simplest solution from Alcon.

The name of the pills is  SPORANOX 15D capsules 100mg from the
laboratory Janssen-Cilag.
The active ingredient of these capsules is ITRACONAZOLE.

If you have red eye from using your contacts for a few hours, do
yourself a favor, and try those pills and change your cleaning solution
to Alcon.