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This article is from the Vision and Eye Care FAQ, by grants@research.canon.com.au (Grant Sayer) with numerous contributions by others.

3.6.11 Why do I have to use protein cleaner ?

Contact lenses are exposed to a complex environment whilst on the eye.
The tearfilm contains a number of different proteins which potentially
adhere to the surface of the contact lens. The buildup of protein
reduces the wettability of the surface of the contact lens which causes
a "smeary" or "fogginess" to vision. A protein cleaner, often an enzymatic
agent, will help in reducing the potential for protein to adhere to the
contact lens surface. One of the benefits of disposable contact lenses is
that protein cleaners are not necessary because the lenses are disposed of
before the is a large build up of proteinateous material.

 

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health, vision, eye care, contact lenses, spectacles, eyecare, prescriptions, sunglasses, surgery