ENVIRONMENT

If a patient works in a dry environment special considerations may have to be taken.  Hydrogel lenses often dry under such conditions causing discomfort and surface deposits.  
Sometimes using thicker 
(0.10 mm or greater) hydrogel 
lenses will minimize the 
discomfort (see the hydrogel 
CD for more details).

If the dryness symptom is due 
to deposits or deposits alone 
are a problem-frequent 
replacement or disposable 
lenses are a viable choice.

Rigid lenses may be required 
to decrease dryness symptoms.

Any contact lens wear can be difficult under low humidity and/or windy conditions.