The silicone hydrogels (Oasys, N&D, Purevision) have a better record than
previous generations of materials, but the incidence of problems is still
proportional to the length of continuous wear.
Taking them out one night a week, or every three days, brings down the risk
considerably, giving your eyes more opportunity to heal the wear-and-tear.
Even though the lenses might be approved for 30 days of continuous wear,
doing so just for convenience probably isn't justified. FDA approval doesn't
mean everybody can get away with it.
-MT, OD
> Hi,
>
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> ramon