Deposits
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.