Innovative contact lenses: Uniform wetting, adhesion of coatings, easy demolding

Many people wear contact lenses to correct their vision or for cosmetic reasons. The development of innovative contact lenses with a high wearing comfort and special functionalities is therefore steadily advanced.

Among other things, contact lenses require good wettability but at the same time provide the best possible oxygen permeability for supplying the cornea of the eye. Contact lenses of recent generations with high wearing comfort are hybrid contact lenses: They are dimensionally stable and have a soft surface.

 

Contact lenses are a popular choice for many reasons: For vision correction, aesthetic and cosmetic reasons as well as functional or optical reasons.
Targeted pretreatment with plasma achieves a significant increase in surface tension which gives materials the optimum capabilities for wettability.

Low-pressure plasma technology allows the surface of contact lenses and intraocular lenses to be selectively functionalized in order to

  • define the optimal oxygen permeability
  • improve wettability (especially of silicone hydrogel lenses, RGP lenses)
  • to ensure optimal sliding behaviour
  • allow new material combinations
  • optimize the manufacturing process (easy demolding in the molding process)

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