A true excessively flat soft contact lens (or soft contact lens skirt as is the case in this hybrid lens) may have too much material to rest all of its surface touching the conjunctiva. The extra or excess material can "flute" up causing a wrinkle at the edge of the lens and/or a bubble. Such a lens is generally uncomfortable because it moves excessively with the blink and because the eyelids hit that elevated material as they traverse the surface of the eye.
Ophthalmic Atlas Images by EyeRounds.org, The University of Iowa are licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
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