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Soft
DW & EW :
Soft DW & EW lens materials are basically the same, & so
too are their permeability. In EW, low oxygen & insufficient
soft lens hydration & cleanliness during sleep increases significantly
the probability of infections & inflammatory tissue reactions
in relation to the continuous duration of wear Microbial Keratitis
is 10-15 times more common with EW as with DW. The vast majority
of contact lens clinical researchers advise most patients against
soft lens EW, except for occasional periods of short duration.
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