Never continue to wear lenses if your eyes are uncomfortable or unusually red.
Never rinse your lenses with tap water.
Never place a lens in your mouth for cleaning or wetting.
Never sleep with the lenses on, unless advised by your contact lens doctor.
Do not interchange your lenses. The best way to avoid this is to ALWAYS deal with the RIGHT lens first (whether for inserting, or removing) and ensure that it is on your eye, or in the case, before touching the left lens.
Avoid rubbing your eyes vigorously while wearing and after removing the lens.
Examine the lens profile while it is on the tip of your fore finger the lens should assume a natural, curved, bowl-like shape. (in Figure: Right/Correct)
If the lens edges tend to point outward, the lens is inside out and needs to be reversed.
Another method is to place the lens in the crease of your palm. when you attempt closing your palm if the lens edges come closer then the lens is correct, if they turn out and touch the palm the lens is inside out and needs to be reversed.