Just a reminder to folks. DO NOT use multipurpose or saline solution for dry eyes. I have strong astigmatism in one eye. That eye is often dry, so the contact lens has trouble orienting. When that first happened, I repeatedly irrigated the eye with multi-purpose and saline to lubricate (hey, I have loads of the stuff!), and the contact lens floated into orientation, but then very soon got stuck wrong. This happened over and over. On research, I have learned that multi-purpose and saline will wet an eye in a very temporary way. They are not lubricants, and are to some degree anti-lubricants. Real tears have vastly better lubricants, and multi-purpose and saline solutions actually suppress tear formation. I started using a real rewetting solution (lots more expensive) and the problem is fixed. Real rewetting solutions are formulated to be more like tears and are VASTLY better at doing lubrication. Yes, these solutions are advertised as such, but I was suspecting that was just marketing for pricey fluids. Nope. They really work. Lesson learned.