Center thickness of a contact lenses is most influenced by
the prescription. Contact lenses are arc or dome shaped that determines
different thickness around a lens. Center thickness plays great role in contact
lens tolerance as it directly affects oxygen permeability in circle contacts.
Since the strength of your prescription defines the center
thick-ness; you must note that contact lenses with higher degree are thicker at
the central point of the lenses. Thick circle lenses block oxygen permeability
& create a feeling of discomfort. People who are strongly near-sighted
should wear contact lenses with high water content.
Contact lens thickness varies from 0.04mm to 0.09mm whereas
the ideal thickness is 0.06mm. Contact lenses that are less than 0.04 are ultra-thin
whereas circle contacts with more than 0.09mm thickness are considered thick
& are poor in oxygen transmission. Thin contact lenses possess high water
count but they make your dryness worse if you suffer from dry eyes syndrome.
Contact lenses with high degree of water content absorb tears from your eyes,
so it is recommended to use lubricating drops when necessary. On the other
hand, they also ensure high oxygen permeability which keeps your eyes
comfortable. In case you suffer from dry eyes; get yourself a pair of contact
lenses with 38% water content.
Other than the prescription it is the type of brand that affect the center thickness of the contact lenses. Continuing to wear your
contact lenses past the expiry also affect the efficacy of colored contacts.
Always toss your disposable contacts for better & schedule annual meet ups
with your eye care provider.
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