Abstract: Cleaning contact lenses by placing each contact lens in a daily use contact lens case with contact lens solution such as sterile saline or lens cleaning/disinfecting solution, placing the case in a liquid in a cleaning tank of an ultrasonic cleaning device operating at a frequency and power level sufficient to clean each lens in a convenient time period.

Abstract: An X-ray film cassette holder which is small, lightweight, simple and economical to construct and use, having a base carrying an expandable frame incorporating two upwardly expandable risers releasably lockable in a plurality of expanded positions, said risers separated by a releasably lockable variable distance; and two film cassette clamps, each of which is pivotably carried by one of said upwardly expandable risers, and releasably lockable in fixed relation thereto, as well as provision for releasably lockable rotatable mounting of a cassette tray sized within a range determined by the variable distance between said risers on said frame, collectively adapted to hold cassettes steadily in a range of vertical positions above a surface whereon it is placed, at any inclination, and being rotatable on said surface, providing desirable adjustability for positioning an X-ray film cassette adjacent a portion of a patient's anatomy for convenient imaging thereof.