The method of eyeglass lenses processing and a device for its performing

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Aim. To develop an inexpensive and efficient method of increasing the hydrophilicity of the lens surface and a device for its implementation.

Methods. To implement the claimed method, a gas discharge device was created. Processing of glasses with plastic lenses in a high-frequency gas discharge (cold plasma) was performed in 47 myopes and 43 hypermetropes. Gas discharge was generated under the following conditions: 1 MHz, 10-20 W, pressure of 0.3-0.01 mm Hg. Processing was carried out for 30-900 seconds. As a result hydrophilic properties of the lens surface were observed in all processed lenses.

Results. On the surface of the lenses a large number of hydrophilic functional groups are formed so during water vapour condensation the formation of a water film occurs instead of forming microdrops. Thus, transparency of the lenses is not disturbed. The hydrophilic properties of the lens surface was maintained in an average for 3-4 weeks. Gas discharge eyeglass lens processing provides a long-term effect of eyeglass lens unsteaming, mechanical stability and safety of the surface, reliable exploitation of the glasses.

Conclusion. We have proposed a fundamentally different way of physical-chemical modification of the lens surface, which is not inferior to existing methods but produces significantly better results.

A V Shishkin

Author for correspondence.
Izhevsk State Agricultural Academy Izhevsk, Russia

A V Korepanov
Izhevsk State Agricultural Academy Izhevsk, Russia

A V Petrov
Izhevsk State Agricultural Academy Izhevsk, Russia

A V Akhkiyamova
Izhevsk State Medical Academy Izhevsk, Russia

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© 2017 Shishkin A.V., Korepanov A.V., Petrov A.V., Akhkiyamova A.V.

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