Claims
- 1. A process for cleaning and disinfecting a soiled contact lens in a single unit operation comprising the steps of:
- immersing said lens in a cavitation-supporting, saline solution, said solution being at ambient temperature;
- subjecting said lens to ultrasonic energy transmitted through said solution at a frequency in the range of 62 to 72 kHz and an intensity in the range of 0.8 to 2.0 watts per ml. of solution present, said ultrasonic energy producing cavitation in said solution and dislodging substantially all of said soil from said lens before the combined elapsed time and temperature conditions within said solution produce any substantial protein denaturation on said lens; and
- continuing to transmit said ultrasonic energy through said solution at said frequency and intensity ranges to produce a temperature in said solution not to exceed about 65.degree. C. but sufficient for a total elapsed period of said ultrasonic energy transmission, not to exceed about 20 minutes, to effect disinfection of said lens.
- 2. A process as recited in claim 1 in which substantially all of said soil is dislodged from said lens within about 90 seconds and before the temperature of said solution reaches about 33.degree. C.
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of applicant's prior copending application, Ser. No. 187,760, filed Sept. 16, 1980 now abandoned.
US Referenced Citations (3)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2438607 |
Feb 1975 |
DEX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
187760 |
Sep 1980 |
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