Deposits are substances that adhere to the
surface of the contact lens during wear. They can be divided into organic and
inorganic deposits. The organic deposits are formed by metabolites of protein or
fat origin, which are normal components of tears. Inorganic deposits are
composed of elements of microscopic particles of dirt. Deposits can cause inflammation, eye irritation or redness.
Improper care of
contact lenses, or using contaminated solution, can create bacterial
deposits on your lenses.
Deposits do not affect the quality
of vision, and that is why they are often neglected by the contact lens
wearers. It is important to respect the manufacturer's re¬commended length of
use of contact lenses. Every material reacts differently to deposits, and
its recommended exchange cycle reflects this.