Inversion Marking For Contact Lenses
(57) Abstract
An ophthalmic lens incorporating clearly identifiable, highly visible inversion marking(s) that become invisible when placed on the eye may be utilized to allow an individual to easily distinguish between the normal state of the lens and the inverted state of the lens. The ophthalmic lens comprises a thin material layer capable of changing its optical state from diffusive light scattering, colored, or both, to invisible transparent at the corneal temperature of a normal person, at the influence of ambient light, or a combination thereof.
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