As you are probably aware, sleeping in contact lenses is not recommended unless your optometrist has specifically prescribed lenses that are designed to be slept in. According to the company that manufactures Biofinity, Cooper Vision, Biofinity lenses have been approved for six nights and seven days of wear -- making them very easy to fit into a busy lifestyle.
Biofinity contacts should be replaced on a schedule even if they fit comfortably. This is because of the proteins that accumulate on contact lenses over time. The buildup of proteins can lead to inflammation that is often not noticed until the inflammation becomes severe.
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